American Mineralogist Crystal Structure Database

47 matching records for this search.

Albite
Download hom/albite.pdf
Prewitt C T, Sueno S, Papike J J
Download am/vol61/AM61_1213.pdf
American Mineralogist 61 (1976) 1213-1225
The crystal structures of high albite and monalbite at high temperatures
T = 24 deg C
feldspar
8.153 12.8694 7.1070 93.521 116.458 90.257 C-1
atom     x     y     z occ Biso
Na   .2737 .0073 .1329     7.62
Si1o .0090 .1650 .2148 .75  .78
Al1o .0090 .1650 .2148 .25  .78
Si1m .0048 .8145 .2290 .75  .78
Al1m .0048 .8145 .2290 .25  .78
Si2o .6902 .1079 .3202 .75  .82
Al2o .6902 .1079 .3202 .25  .82
Si2m .6849 .8776 .3535 .75  .79
Al2m .6849 .8776 .3535 .25  .79
Oa1  .0055 .1351 .9845     1.62
Oa2  .5916 .9907 .2783     1.32
Obo  .8212 .1084 .1990     1.65
Obm  .8184 .8470 .2455     1.89
Oco  .0162 .2902 .2770     1.45
Ocm  .0213 .6873 .2180     1.49
Odo  .1959 .1123 .3876     1.44
Odm  .1885 .8675 .4266     1.62
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Albite
Download hom/albite.pdf
Prewitt C T, Sueno S, Papike J J
Download am/vol61/AM61_1213.pdf
American Mineralogist 61 (1976) 1213-1225
The crystal structures of high albite and monalbite at high temperatures
T = 350 deg C
feldspar
8.1829 12.8947 7.1190 93.041 116.352 90.172 C-1
atom     x     y     z occ Biso
Na   .2748 .0059 .1348     8.60
Si1o .0089 .1674 .2164 .75 1.22
Al1o .0089 .1674 .2164 .25 1.22
Si1m .0054 .8155 .2284 .75 1.21
Al1m .0054 .8155 .2284 .25 1.21
Si2o .6919 .1096 .3242 .75 1.24
Al2o .6919 .1096 .3242 .25 1.24
Si2m .6877 .8785 .3525 .75 1.23
Al2m .6877 .8785 .3525 .25 1.23
Oa1  .0046 .1359 .9874     2.44
Oa2  .5951 .9924 .2798     1.84
Obo  .8210 .1136 .2021     2.48
Obm  .8198 .8491 .2434     2.90
Oco  .0198 .2933 .2748     2.26
Ocm  .0224 .6890 .2241     2.27
Odo  .1942 .1141 .3900     2.27
Odm  .1882 .8688 .4234     2.50
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View JMOL 3-D Structure
 
Albite
Download hom/albite.pdf
Prewitt C T, Sueno S, Papike J J
Download am/vol61/AM61_1213.pdf
American Mineralogist 61 (1976) 1213-1225
The crystal structures of high albite and monalbite at high temperatures
T = 600 deg C
feldspar
8.2097 12.9182 7.1284 92.482 116.282 90.128 C-1
atom     x     y     z occ  Biso
Na   .2761 .0037 .1374     10.02
Si1o .0088 .1697 .2174 .75  1.62
Al1o .0088 .1697 .2174 .25  1.62
Si1m .0061 .8165 .2275 .75  1.60
Al1m .0061 .8165 .2275 .25  1.60
Si2o .6931 .1110 .3281 .75  1.62
Al2o .6931 .1110 .3281 .25  1.62
Si2m .6902 .8796 .3510 .75  1.63
Al2m .6902 .8796 .3510 .25  1.63
Oa1  .0039 .1371 .9896      3.04
Oa2  .5982 .9938 .2810      2.41
Obo  .8217 .1185 .2071      3.38
Obm  .8208 .8522 .2402      3.61
Oco  .0210 .2955 .2709      2.85
Ocm  .0236 .6899 .2310      2.93
Odo  .1927 .1158 .3928      3.03
Odm  .1881 .8697 .4195      3.32
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Albite
Download hom/albite.pdf
Prewitt C T, Sueno S, Papike J J
Download am/vol61/AM61_1213.pdf
American Mineralogist 61 (1976) 1213-1225
The crystal structures of high albite and monalbite at high temperatures
T = 750 deg C
feldspar
8.2296 12.9336 7.1357 91.956 116.232 90.078 C-1
atom     x     y     z occ  Biso
Na   .2769 .0029 .1374     10.80
Si1o .0087 .1718 .2189 .75  1.89
Al1o .0087 .1718 .2189 .25  1.89
Si1m .0066 .8177 .2268 .75  1.85
Al1m .0066 .8177 .2268 .25  1.85
Si2o .6940 .1123 .3316 .75  1.88
Al2o .6940 .1123 .3316 .25  1.88
Si2m .6919 .8805 .3494 .75  1.89
Al2m .6919 .8805 .3494 .25  1.89
Oa1  .0030 .1374 .9912      3.60
Oa2  .6012 .9951 .2825      2.85
Obo  .8221 .1225 .2114      3.86
Obm  .8216 .8548 .2370      4.24
Oco  .0226 .2974 .2670      3.26
Ocm  .0242 .6915 .2376      3.38
Odo  .1912 .1175 .3951      3.51
Odm  .1882 .8714 .4166      3.70
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Albite
Download hom/albite.pdf
Prewitt C T, Sueno S, Papike J J
Download am/vol61/AM61_1213.pdf
American Mineralogist 61 (1976) 1213-1225
The crystal structures of high albite and monalbite at high temperatures
T = 950 deg C
feldspar
8.2508 12.9489 7.1431 91.161 116.169 90.03 C-1
atom     x     y     z occ  Biso
Na   .2780 .0019 .1371     11.66
Si1o .0086 .1746 .2210 .75  2.17
Al1o .0086 .1746 .2210 .25  2.17
Si1m .0072 .8194 .2253 .75  2.16
Al1m .0072 .8194 .2253 .25  2.16
Si2o .6951 .1141 .3363 .75  2.20
Al2o .6951 .1141 .3363 .25  2.20
Si2m .6938 .8820 .3465 .75  2.21
Al2m .6938 .8820 .3465 .25  2.21
Oa1  .0016 .1380 .9952      3.98
Oa2  .6033 .9971 .2831      3.22
Obo  .8226 .1282 .2169      4.52
Obm  .8222 .8593 .2323      4.75
Oco  .0239 .3005 .2619      3.79
Ocm  .0247 .6933 .2455      3.89
Odo  .1894 .1198 .4001      4.07
Odm  .1881 .8736 .4117      4.13
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View JMOL 3-D Structure
 
Albite
Download hom/albite.pdf
Prewitt C T, Sueno S, Papike J J
Download am/vol61/AM61_1213.pdf
American Mineralogist 61 (1976) 1213-1225
The crystal structures of high albite and monalbite at high temperatures
T = 1090 deg C
feldspar
8.2763 12.9593 7.1463 90.097 116.092 89.988 C-1
atom      x     y     z occ  Biso
Na    .2793     0 .1377     12.67
Si1o  .0084 .1782 .2227 .75  2.52
Al1o  .0084 .1782 .2227 .25  2.52
Si1m  .0080 .8215 .2232 .75  2.51
Al1m  .0080 .8215 .2232 .25  2.51
Si2o  .6962 .1160 .3418 .75  2.53
Al2o  .6962 .1160 .3418 .25  2.53
Si2m  .6961 .8838 .3428 .75  2.49
Al2m  .6961 .8838 .3428 .25  2.49
Oa1  -.0005 .1389 .9987      4.38
Oa2   .6055 .9998 .2847      3.46
Obo   .8235 .1336 .2240      5.35
Obm   .8233 .8651 .2257      5.26
Oco   .0263 .3039 .2536      4.62
Ocm   .0261 .6958 .2521      4.67
Odo   .1879 .1233 .4042      4.45
Odm   .1879 .8758 .4061      4.49
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Albite
Download hom/albite.pdf
Prewitt C T, Sueno S, Papike J J
Download am/vol61/AM61_1213.pdf
American Mineralogist 61 (1976) 1213-1225
The crystal structures of high albite and monalbite at high temperatures
T = 1105 deg C
feldspar
8.278 12.959 7.145 90.1 116.1 90 C-1
atom     x     y     z occ  Biso
Na   .2797     0 .1382     12.59
Si1o .0081 .1783 .2230 .75  2.50
Al1o .0081 .1783 .2230 .25  2.50
Si1m .0080 .8214 .2233 .75  2.53
Al1m .0080 .8214 .2233 .25  2.53
Si2o .6963 .1160 .3420 .75  2.51
Al2o .6963 .1160 .3420 .25  2.51
Si2m .6964 .8838 .3426 .75  2.50
Al2m .6964 .8838 .3426 .25  2.50
Oa1  .0002 .1390 .9995      4.42
Oa2  .6072 .9999 .2850      3.43
Obo  .8238 .1345 .2242      5.31
Obm  .8239 .8654 .2252      5.35
Oco  .0266 .3041 .2534      4.61
Ocm  .0264 .6957 .2525      4.60
Odo  .1882 .1236 .4050      4.52
Odm  .1875 .8761 .4056      4.49
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Albite
Download hom/albite.pdf
Winter J K, Ghose S, Okamura F P
Download am/vol62/AM62_921.pdf
American Mineralogist 62 (1977) 921-931
A high-temperature study of the thermal expansion and the anisotropy of the
sodium atom in low albite
T = 500 deg C
Note: this sample of feldspar is from Tiburon, Marin County, California, USA
8.206 12.817 7.169 94 116.4 87.7 C-1
atom     x     y     z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2735 .9881 .1470  .0136  .0135  .0379 -.0019  .0082 -.0112
Al1o .0091 .1710 .2092  .0069  .0020  .0071 -.0006  .0031  .0001
Si1m .0046 .8198 .2375  .0063  .0018  .0065  .0005  .0030  .0005
Si2o .6952 .1114 .3192  .0057  .0015  .0083 -.0003  .0024  .0002
Si2m .6860 .8822 .3610  .0057  .0015  .0086  .0002  .0027  .0005
Oa1  .0051 .1345 .9686  .0152  .0036  .0087 -.0003  .0067  .0007
Oa2  .5995 .9983 .2830  .0071  .0016  .0140 -.0001  .0029  .0009
Obo  .8132 .1149 .1941  .0105  .0042  .0175 -.0021  .0085 -.0008
Obm  .8219 .8512 .2563  .0120  .0049  .0241  .0020  .0122  .0009
Oco  .0179 .3045 .2705  .0094  .0022  .0175 -.0012  .0048 -.0005
Ocm  .0257 .6937 .2369  .0092  .0020  .0167  .0011  .0034  .0008
Odo  .2045 .1106 .3905  .0114  .0037  .0093  .0011  .0013  .0009
Odm  .1816 .8688 .4330  .0125  .0041  .0096 -.0013  .0000 -.0005
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View JMOL 3-D Structure
 
Albite
Download hom/albite.pdf
Winter J K, Ghose S, Okamura F P
Download am/vol62/AM62_921.pdf
American Mineralogist 62 (1977) 921-931
A high-temperature study of the thermal expansion and the anisotropy of the
sodium atom in low albite
T = 750 deg C
Note: this sample of feldspar is from Tiburon, Marin County, California, USA
8.242 12.841 7.176 93.7 116.3 87.6 C-1
atom     x     y     z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2759 .9882 .1466  .0184  .0174  .0487 -.0024  .0105 -.0131
Al1o .0094 .1727 .2102  .0089  .0026  .0092 -.0008  .0040  .0002
Si1m .0051 .8198 .2372  .0082  .0024  .0084  .0007  .0039  .0005
Si2o .6974 .1124 .3221  .0075  .0020  .0109 -.0004  .0032  .0002
Si2m .6886 .8826 .3605  .0074  .0020  .0113  .0002  .0036  .0006
Oa1  .0049 .1359 .9703  .0198  .0048  .0108 -.0004  .0086  .0009
Oa2  .6038 .9993 .2841  .0090  .0021  .0189 -.0001  .0034  .0012
Obo  .8140 .1186 .1967  .0136  .0056  .0226 -.0027  .0111 -.0008
Obm  .8233 .8520 .2555  .0154  .0065  .0307  .0029  .0155  .0011
Oco  .0203 .3062 .2696  .0123  .0028  .0231 -.0017  .0062 -.0009
Ocm  .0275 .6940 .2413  .0123  .0027  .0220  .0015  .0050  .0010
Odo  .2029 .1119 .3921  .0147  .0050  .0124  .0013  .0018  .0013
Odm  .1808 .8694 .4301  .0162  .0053  .0124 -.0020  .0004 -.0008
Download AMC data (View Text File)
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View JMOL 3-D Structure
 
Albite
Download hom/albite.pdf
Winter J K, Ghose S, Okamura F P
Download am/vol62/AM62_921.pdf
American Mineralogist 62 (1977) 921-931
A high-temperature study of the thermal expansion and the anisotropy of the
sodium atom in low albite
T = 970 deg C
Note: this sample of feldspar is from Tiburon, Marin County, California, USA
8.277 12.860 7.181 93.3 116.2 87.6 C-1
atom     x     y     z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2782 .9883 .1468  .0236  .0203  .0612 -.0020  .0137 -.0124
Al1o .0098 .1747 .2113  .0111  .0032  .0113 -.0010  .0050  .0002
Si1m .0058 .8200 .2370  .0101  .0030  .0102  .0008  .0047  .0005
Si2o .6997 .1135 .3252  .0092  .0025  .0136 -.0005  .0040  .0002
Si2m .6911 .8830 .3596  .0091  .0025  .0139  .0002  .0044  .0006
Oa1  .0045 .1371 .9717  .0242  .0061  .0133 -.0002  .0106  .0011
Oa2  .6078 .0001 .2841  .0117  .0025  .0230 -.0002  .0043  .0012
Obo  .8155 .1223 .2012  .0164  .0073  .0282 -.0034  .0137 -.0005
Obm  .8252 .8531 .2549  .0178  .0081  .0359  .0031  .0175  .0009
Oco  .0225 .3080 .2679  .0151  .0036  .0285 -.0019  .0074 -.0007
Ocm  .0298 .6947 .2466  .0152  .0033  .0290  .0021  .0074  .0018
Odo  .2014 .1136 .3934  .0175  .0061  .0152  .0015  .0023  .0016
Odm  .1795 .8706 .4280  .0190  .0068  .0153 -.0023  .0006 -.0007
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Albite
Download hom/albite.pdf
Keefer K D, Brown G E
Download am/vol63/AM63_1264.pdf
American Mineralogist 63 (1978) 1264-1273
Crystal structures and compositions of sanidine and high albite in
cryptoperthitic intergrowth
Note this sample of feldspar is from the
Rabb Canyon pegmatite, Grant County, New Mexico, USA
8.144 12.989 7.160 92.10 116.56 90.21 C-1
atom     x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2690 .0048 .1319 .80  .0101  .0143  .0357  .0009  .0026 -.0113
K    .2690 .0048 .1319 .20  .0101  .0143  .0357  .0009  .0026 -.0113
Si1o .0078 .1694 .2182 .75  .0063  .0030  .0036 -.0002  .0023  .0000
Al1o .0078 .1694 .2182 .25  .0063  .0030  .0036 -.0002  .0023  .0000
Si1m .0057 .8175 .2261 .75  .0059  .0030  .0036  .0006  .0017  .0005
Al1m .0057 .8175 .2261 .25  .0059  .0030  .0036  .0006  .0017  .0005
Si2o .6893 .1104 .3287 .75  .0050  .0029  .0050  .0000  .0012  .0003
Al2o .6893 .1104 .3287 .25  .0050  .0029  .0050  .0000  .0012  .0003
Si2m .6857 .8802 .3484 .75  .0051  .0029  .0045  .0003  .0013  .0003
Al2m .6857 .8802 .3484 .25  .0051  .0029  .0045  .0003  .0013  .0003
Oa1  .0035 .1359 .9914      .0125  .0042  .0088 -.0001  .0059 -.0003
Oa2  .5913 .9943 .2821      .0071  .0035  .0091 -.0002  .0026  .0001
Obo  .8216 .1145 .2108      .0081  .0054  .0154 -.0011  .0074 -.0003
Obm  .8184 .8552 .2378      .0089  .0061  .0122  .0013  .0048 -.0001
Oco  .0152 .2959 .2658      .0090  .0040  .0097 -.0010  .0032 -.0004
Ocm  .0202 .6893 .2329      .0089  .0034  .0096  .0010  .0015  .0006
Odo  .1965 .1168 .3950      .0091  .0040  .0077  .0009  .0018  .0008
Odm  .1918 .8710 .4190      .0100  .0039  .0069 -.0004 -.0010 -.0006
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View JMOL 3-D Structure
 
Albite
Download hom/albite.pdf
Winter J K, Okamura F P, Ghose S
Download am/vol64/AM64_409.pdf
American Mineralogist 64 (1979) 409-423
A high-temperature structural study of high albite, monalbite, and the
analbite - monalbite phase transition
T = 25 C
Note: this sample of feldspar is from Tiburon, Marin County, California, USA
8.161 12.875 7.110 93.53 116.46 90.24 C-1
atom     x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2737 .0075 .1332      .0072  .0182  .0425  .0016  .0011 -.0207
Si1o .0090 .1649 .2147 .75  .0043  .0014  .0048 -.0004  .0021  .0001
Al1o .0090 .1649 .2147 .25  .0043  .0014  .0048 -.0004  .0021  .0001
Si1m .0048 .8146 .2289 .75  .0041  .0015  .0047  .0004  .0020  .0003
Al1m .0048 .8146 .2289 .25  .0041  .0015  .0047  .0004  .0020  .0003
Si2o .6904 .1080 .3202 .75  .0038  .0012  .0059 -.0001  .0018  .0002
Al2o .6904 .1080 .3202 .25  .0038  .0012  .0059 -.0001  .0018  .0002
Si2m .6849 .8776 .3537 .75  .0039  .0011  .0059  .0001  .0019  .0003
Al2m .6849 .8776 .3537 .25  .0039  .0011  .0059  .0001  .0019  .0003
Oa1  .0053 .1348 .9844      .0107  .0025  .0085  .0002  .0055  .0005
Oa2  .5917 .9908 .2787      .0056  .0017  .0102 -.0001  .0025  .0008
Obo  .8214 .1086 .1991      .0078  .0025  .0132 -.0009  .0061 -.0004
Obm  .8188 .8472 .2456      .0073  .0035  .0143  .0008  .0065 -.0002
Oco  .0159 .2906 .2773      .0065  .0021  .0111 -.0003  .0036 -.0002
Ocm  .0217 .6872 .2184      .0067  .0021  .0099  .0008  .0020  .0002
Odo  .1962 .1122 .3879      .0070  .0022  .0078  .0006  .0018  .0006
Odm  .1884 .8674 .4267      .0070  .0026  .0083 -.0004  .0007 -.0005
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Albite
Download hom/albite.pdf
Winter J K, Okamura F P, Ghose S
Download am/vol64/AM64_409.pdf
American Mineralogist 64 (1979) 409-423
A high-temperature structural study of high albite, monalbite, and the
analbite - monalbite phase transition
T = 500 C
Note: this sample of feldspar is from Tiburon, Marin County, California, USA
8.208 12.934 7.134 92.65 116.25 90.12 C-1
atom     x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2759 .0033 .1375      .0147  .0215  .0589  .0014  .0057 -.0176
Si1o .0087 .1690 .2173 .75  .0077  .0026  .0081 -.0005  .0036  .0003
Al1o .0087 .1690 .2173 .25  .0077  .0026  .0081 -.0005  .0036  .0003
Si1m .0059 .8161 .2277 .75  .0077  .0026  .0079  .0010  .0036  .0006
Al1m .0059 .8161 .2277 .25  .0077  .0026  .0079  .0010  .0036  .0006
Si2o .6929 .1105 .3272 .75  .0068  .0021  .0100  .0000  .0029  .0004
Al2o .6929 .1105 .3272 .25  .0068  .0021  .0100  .0000  .0029  .0004
Si2m .6896 .8793 .3513 .75  .0070  .0021  .0104  .0004  .0034  .0006
Al2m .6896 .8793 .3513 .25  .0070  .0021  .0104  .0004  .0034  .0006
Oa1  .0042 .1372 .9887      .0194  .0047  .0130  .0006  .0091  .0010
Oa2  .5978 .9933 .2812      .0101  .0026  .0178  .0003  .0043  .0012
Obo  .8218 .1166 .2058      .0134  .0054  .0226 -.0020  .0106 -.0003
Obm  .8211 .8514 .2405      .0139  .0064  .0262  .0024  .0120  .0002
Oco  .0199 .2946 .2715      .0120  .0033  .0204 -.0007  .0065 -.0005
Ocm  .0228 .6896 .2292      .0120  .0033  .0190  .0014  .0039  .0009
Odo  .1925 .1151 .3929      .0133  .0046  .0126  .0015  .0021  .0014
Odm  .1886 .8695 .4203      .0135  .0051  .0129 -.0007  .0008 -.0008
Download AMC data (View Text File)
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Download diffraction data (View Text File)
View JMOL 3-D Structure
 
Albite
Download hom/albite.pdf
Winter J K, Okamura F P, Ghose S
Download am/vol64/AM64_409.pdf
American Mineralogist 64 (1979) 409-423
A high-temperature structural study of high albite, monalbite, and the
analbite - monalbite phase transition
T = 750 C
Note: this sample of feldspar is from Tiburon, Marin County, California, USA
8.234 12.955 7.143 92 116.17 90.06 C-1
atom     x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2774 .0024 .1378      .0189  .0240  .0642  .0011  .0085 -.0133
Si1o .0087 .1718 .2191 .75  .0094  .0032  .0099 -.0007  .0044  .0002
Al1o .0087 .1718 .2191 .25  .0094  .0032  .0099 -.0007  .0044  .0002
Si1m .0065 .8173 .2266 .75  .0093  .0032  .0098  .0011  .0044  .0006
Al1m .0065 .8173 .2266 .25  .0093  .0032  .0098  .0011  .0044  .0006
Si2o .6941 .1121 .3316 .75  .0083  .0026  .0127 -.0002  .0037  .0004
Al2o .6941 .1121 .3316 .25  .0083  .0026  .0127 -.0002  .0037  .0004
Si2m .6920 .8804 .3491 .75  .0084  .0025  .0128  .0006  .0041  .0006
Al2m .6920 .8804 .3491 .25  .0084  .0025  .0128  .0006  .0041  .0006
Oa1  .0026 .1383 .9916      .0232  .0059  .0149  .0004  .0110  .0010
Oa2  .6013 .9949 .2823      .0115  .0031  .0210  .0002  .0046  .0010
Obo  .8231 .1223 .2123      .0157  .0068  .0280 -.0023  .0126  .0003
Obm  .8225 .8546 .2373      .0166  .0079  .0299  .0029  .0143  .0003
Oco  .0220 .2972 .2667      .0139  .0040  .0255 -.0011  .0075 -.0008
Ocm  .0233 .6909 .2365      .0139  .0039  .0239  .0016  .0050  .0011
Odo  .1913 .1174 .3962      .0158  .0060  .0148  .0018  .0022  .0017
Odm  .1885 .8710 .4160      .0160  .0063  .0153 -.0010  .0012 -.0007
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Albite
Download hom/albite.pdf
Winter J K, Okamura F P, Ghose S
Download am/vol64/AM64_409.pdf
American Mineralogist 64 (1979) 409-423
A high-temperature structural study of high albite, monalbite, and the
analbite - monalbite phase transition
T = 980 C
Note: this sample of feldspar is from Tiburon, Marin County, California, USA
8.259 12.975 7.151 90.8 116.1 90. C-1
atom     x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2789 .0007 .1386      .0227  .0258  .0731  .0005  .0109 -.0055
Si1o .0082 .1757 .2217 .75  .0108  .0039  .0116 -.0008  .0051  .0001
Al1o .0082 .1757 .2217 .25  .0108  .0039  .0116 -.0008  .0051  .0001
Si1m .0074 .8199 .2245 .75  .0108  .0039  .0116  .0012  .0052  .0004
Al1m .0074 .8199 .2245 .25  .0108  .0039  .0116  .0012  .0052  .0004
Si2o .6952 .1146 .3382 .75  .0098  .0031  .0150 -.0003  .0045  .0002
Al2o .6952 .1146 .3382 .25  .0098  .0031  .0150 -.0003  .0045  .0002
Si2m .6944 .8824 .3448 .75  .0098  .0032  .0148  .0006  .0047  .0005
Al2m .6944 .8824 .3448 .25  .0098  .0032  .0148  .0006  .0047  .0005
Oa1  .0007 .1390 .9970      .0266  .0072  .0172  .0005  .0120  .0004
Oa2  .6051 .9982 .2843      .0134  .0036  .0243  .0002  .0046  .0005
Obo  .8231 .1302 .2199      .0178  .0087  .0331 -.0029  .0146 -.0006
Obm  .8233 .8608 .2293      .0182  .0093  .0339  .0034  .0155 -.0003
Oco  .0243 .3012 .2596      .0161  .0046  .0294 -.0012  .0079 -.0008
Ocm  .0248 .6943 .2477      .0160  .0046  .0294  .0018  .0067  .0010
Odo  .1894 .1211 .4022      .0182  .0074  .0177  .0020  .0023  .0016
Odm  .1881 .8741 .4095      .0188  .0074  .0179 -.0018  .0012 -.0016
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Albite
Download hom/albite.pdf
Winter J K, Okamura F P, Ghose S
Download am/vol64/AM64_409.pdf
American Mineralogist 64 (1979) 409-423
A high-temperature structural study of high albite, monalbite, and the
analbite - monalbite phase transition
T = 1040 C
Note: this sample of feldspar is from Tiburon, Marin County, California, USA
8.270 12.978 7.154 90.22 116.05 89.96 C-1
atom     x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2794 1.000 .1378      .0243  .0267  .0718 -.0003  .0114 -.0009
Si1o .0081 .1776 .2239 .75  .0112  .0042  .0120 -.0009  .0054 -.0001
Al1o .0081 .1776 .2239 .25  .0112  .0042  .0120 -.0009  .0054 -.0001
Si1m .0078 .8212 .2236 .75  .0112  .0042  .0121  .0012  .0054  .0003
Al1m .0078 .8212 .2236 .25  .0112  .0042  .0121  .0012  .0054  .0003
Si2o .6955 .1158 .3409 .75  .0101  .0035  .0155 -.0003  .0046  .0000
Al2o .6955 .1158 .3409 .25  .0101  .0035  .0155 -.0003  .0046  .0000
Si2m .6953 .8834 .3427 .75  .0102  .0035  .0154  .0006  .0048  .0003
Al2m .6953 .8834 .3427 .25  .0102  .0035  .0154  .0006  .0048  .0003
Oa1  .9999 .1389 .9989      .0280  .0075  .0174  .0000  .0128  .0002
Oa2  .6061 .9996 .2844      .0138  .0040  .0257  .0002  .0052  .0003
Obo  .8236 .1334 .2231      .0184  .0097  .0349 -.0030  .0154 -.0007
Obm  .8237 .8641 .2261      .0186  .0096  .0343  .0036  .0158  .0001
Oco  .0248 .3030 .2556      .0166  .0049  .0300 -.0017  .0073 -.0012
Ocm  .0246 .6956 .2524      .0170  .0048  .0299  .0019  .0071  .0012
Odo  .1887 .1226 .4044      .0193  .0078  .0183  .0018  .0022  .0017
Odm  .1882 .8762 .4063      .0189  .0079  .0184 -.0018  .0017 -.0018
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Albite
Download hom/albite.pdf
Winter J K, Okamura F P, Ghose S
Download am/vol64/AM64_409.pdf
American Mineralogist 64 (1979) 409-423
A high-temperature structural study of high albite, monalbite, and the
analbite - monalbite phase transition
T = 980 C, sample = monalbite
Note: this sample of feldspar is from Tiburon, Marin County, California, USA
8.274 12.991 7.144 90 116.13 90 C2/m
atom     x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2789     0 .1378      .0244  .0261  .0775      0  .0112      0
Si1  .0081 .1784 .2233 .75  .0113  .0042  .0127 -.0011  .0053 -.0002
Al1  .0081 .1784 .2233 .25  .0113  .0042  .0127 -.0011  .0053 -.0002
Si2  .6959 .1163 .3420 .75  .0104  .0035  .0159 -.0005  .0047 -.0002
Al2  .6959 .1163 .3420 .25  .0104  .0035  .0159 -.0005  .0047 -.0002
Oa1      0 .1393     0      .0286  .0072  .0180      0  .0123      0
Oa2  .6063     0 .2835      .0142  .0038  .0262      0  .0052      0
Ob   .8233 .1350 .2252      .0183  .0101  .0371 -.0036  .0163  .0002
Oc   .0257 .3044 .2535      .0176  .0048  .0330 -.0019  .0085 -.0013
Od   .1891 .1229 .4049      .0193  .0085  .0184  .0024  .0021  .0024
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Albite
Download hom/albite.pdf
Winter J K, Okamura F P, Ghose S
Download am/vol64/AM64_409.pdf
American Mineralogist 64 (1979) 409-423
A high-temperature structural study of high albite, monalbite, and the
analbite - monalbite phase transition
T = 1060 deg C, sample = monalbite
Note: this sample of feldspar is from Tiburon, Marin County, California, USA
8.297 12.994 7.144 90 116.01 90 C2/m
atom     x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2775     0 .1385      .0581  .0275  .0787      0  .0077      0
Si1  .0084 .1787 .2236 .75  .0219  .0042  .0148 -.0008  .0061 -.0002
Al1  .0084 .1787 .2236 .25  .0219  .0042  .0148 -.0008  .0061 -.0002
Si2  .6975 .1166 .3421 .75  .0194  .0034  .0195 -.0007  .0053 -.0003
Al2  .6975 .1166 .3421 .25  .0194  .0034  .0195 -.0007  .0053 -.0003
Oa1      0 .1411     0      .0305  .0076  .0218      0  .0180      0
Oa2  .6126     0 .2852      .0281  .0038  .0315      0  .0092      0
Ob   .8227 .1366 .2246      .0235  .0098  .0423 -.0063  .0174  .0015
Oc   .0294 .3049 .2537      .0362  .0049  .0348 -.0017  .0109 -.0012
Od   .1873 .1233 .4044      .0256  .0085  .0231  .0018  .0028  .0023
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Albite
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Harlow G E, Brown G E
Download am/vol65/AM65_986.pdf
American Mineralogist 65 (1980) 986-995
Low albite: An X-Ray and neutron diffraction study
Sample: X-ray single Na atom
Note: this sample of feldspar is from Amelia, Virginia
8.142 12.785 7.159 94.19 116.61 87.68 C-1
atom      x      y      z  occ  B(1,1)  B(2,2)  B(3,3)  B(1,2)  B(1,3)  B(2,3)
Al1o .00878 .16864 .20805 .970 0.00333 0.00070 0.00263 -.00020 0.00128 0.00002
Si1o .00878 .16864 .20805 .030 0.00333 0.00070 0.00263 -.00020 0.00128 0.00002
Si1m .00382 .82064 .23734 .965 0.00277 0.00056 0.00219 0.00021 0.00114 0.00013
Al1m .00382 .82064 .23734 .035 0.00277 0.00056 0.00219 0.00021 0.00114 0.00013
Si2o .69210 .11040 .31507      0.00246 0.00046 0.00306 -.00002 0.00090 0.00000
Si2m .68175 .88189 .36071      0.00250 0.00049 0.00318 0.00011 0.00116 0.00015
Na1  .26839 .98867 .14628 .986 0.00620 0.00524 0.01468 -.00080 0.00356 -.00516
Oa1  .00481 .12120 .96610      0.00716 0.00121 0.00333 0.00027 0.00296 0.00023
Oa2  .59166 .99766 .27967      0.00336 0.00069 0.00585 -.00004 0.00127 0.00028
Obo  .81285 .11039 .19124      0.00518 0.00146 0.00788 -.00067 0.00406 -.00031
Obm  .82061 .85121 .25942      0.00593 0.00174 0.01051 0.00097 0.00531 0.00028
Oco  .01348 .30276 .27023      0.00523 0.00082 0.00661 -.00025 0.00217 -.00027
Ocm  .02402 .69390 .22938      0.00485 0.00082 0.00672 0.00048 0.00128 0.00014
Odo  .20765 .10922 .38898      0.00564 0.00145 0.00403 0.00066 0.00055 0.00047
Odm  .18316 .86825 .43555      0.00634 0.00152 0.00436 -.00040 -.00002 -.00026
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Albite
Download hom/albite.pdf
Harlow G E, Brown G E
Download am/vol65/AM65_986.pdf
American Mineralogist 65 (1980) 986-995
Low albite: An X-Ray and neutron diffraction study
Sample: X-ray split Na site
Note: this sample of feldspar is from Amelia, Virginia
8.142 12.785 7.159 94.19 116.61 87.68 C-1
atom      x      y      z  occ  B(1,1)  B(2,2)  B(3,3)  B(1,2)  B(1,3)  B(2,3)
Al1o .00878 .16864 .20805 .970 0.00333 0.00070 0.00263 -.00020 0.00128 0.00002
Si1o .00878 .16864 .20805 .030 0.00333 0.00070 0.00263 -.00020 0.00128 0.00002
Si1m .00382 .82064 .23734 .965 0.00277 0.00056 0.00219 0.00021 0.00114 0.00013
Al1m .00382 .82064 .23734 .035 0.00277 0.00056 0.00219 0.00021 0.00114 0.00013
Si2o .69210 .11040 .31507      0.00246 0.00046 0.00306 -.00002 0.00090 0.00000
Si2m .68175 .88189 .36071      0.00250 0.00049 0.00318 0.00011 0.00116 0.00015
Na2  .27033 .97800 .16219
Na3  .26617 .00103 .12793
Oa1  .00481 .12120 .96610      0.00716 0.00121 0.00333 0.00027 0.00296 0.00023
Oa2  .59166 .99766 .27967      0.00336 0.00069 0.00585 -.00004 0.00127 0.00028
Obo  .81285 .11039 .19124      0.00518 0.00146 0.00788 -.00067 0.00406 -.00031
Obm  .82061 .85121 .25942      0.00593 0.00174 0.01051 0.00097 0.00531 0.00028
Oco  .01348 .30276 .27023      0.00523 0.00082 0.00661 -.00025 0.00217 -.00027
Ocm  .02402 .69390 .22938      0.00485 0.00082 0.00672 0.00048 0.00128 0.00014
Odo  .20765 .10922 .38898      0.00564 0.00145 0.00403 0.00066 0.00055 0.00047
Odm  .18316 .86825 .43555      0.00634 0.00152 0.00436 -.00040 -.00002 -.00026
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Albite
Download hom/albite.pdf
Harlow G E, Brown G E
Download am/vol65/AM65_986.pdf
American Mineralogist 65 (1980) 986-995
Low albite: An X-Ray and neutron diffraction study
Sample: neutron single Na atom
Note: this sample of feldspar is from Amelia, Virginia
8.142 12.785 7.159 94.19 116.61 87.68 C-1
atom      x      y      z  occ  B(1,1)  B(2,2)  B(3,3)  B(1,2)  B(1,3)  B(2,3)
Al1o .00901 .16862 .20806 .970 0.00326 0.00098 0.00314 -.00029 0.00163 0.00010
Si1o .00901 .16862 .20806 .030 0.00326 0.00098 0.00314 -.00029 0.00163 0.00010
Si1m .00386 .82062 .23728 .965 0.00266 0.00087 0.00278 0.00015 0.00147 0.00014
Al1m .00386 .82062 .23728 .035 0.00266 0.00087 0.00278 0.00015 0.00147 0.00014
Si2o .69209 .11036 .31508      0.00259 0.00073 0.00381 -.00012 0.00143 0.00019
Si2m .68152 .88195 .36078      0.00228 0.00079 0.00380 0.00005 0.00138 0.00025
Na1  .26849 .98870 .14672 .986 0.00580 0.00591 0.01548 -.00100 0.00400 -.00515
Oa1  .00490 .12115 .96638      0.00641 0.00159 0.00368 -.00011 0.00304 0.00037
Oa2  .59229 .99755 .28053      0.00311 0.00078 0.00581 -.00005 0.00165 0.00043
Obo  .81231 .11013 .19056      0.00461 0.00174 0.00805 -.00092 0.00419 -.00029
Obm  .82027 .85114 .25876      0.00542 0.00233 0.01076 0.00089 0.00582 0.00040
Oco  .01342 .30252 .27026      0.00404 0.00098 0.00754 -.00057 0.00237 -.00020
Ocm  .02398 .69389 .22991      0.00421 0.00092 0.00701 0.00039 0.00167 0.00033
Odo  .20770 .10901 .38910      0.00476 0.00175 0.00409 0.00039 0.00084 0.00044
Odm  .18364 .86819 .43609      0.00542 0.00180 0.00431 -.00055 0.00012 -.00015
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Albite
Download hom/albite.pdf
Harlow G E, Brown G E
Download am/vol65/AM65_986.pdf
American Mineralogist 65 (1980) 986-995
Low albite: An X-Ray and neutron diffraction study
Sample: neutron split Na site
Note: this sample of feldspar is from Amelia, Virginia
8.142 12.785 7.159 94.19 116.61 87.68 C-1
atom      x      y      z  occ  B(1,1)  B(2,2)  B(3,3)  B(1,2)  B(1,3)  B(2,3)
Al1o .00901 .16862 .20806 .970 0.00326 0.00098 0.00314 -.00029 0.00163 0.00010
Si1o .00901 .16862 .20806 .030 0.00326 0.00098 0.00314 -.00029 0.00163 0.00010
Si1m .00386 .82062 .23728 .965 0.00266 0.00087 0.00278 0.00015 0.00147 0.00014
Al1m .00386 .82062 .23728 .035 0.00266 0.00087 0.00278 0.00015 0.00147 0.00014
Si2o .69209 .11036 .31508      0.00259 0.00073 0.00381 -.00012 0.00143 0.00019
Si2m .68152 .88195 .36078      0.00228 0.00079 0.00380 0.00005 0.00138 0.00025
Na2  .27098 .97765 .16218
Na3  .26561 .00168 .12859
Oa1  .00490 .12115 .96638      0.00641 0.00159 0.00368 -.00011 0.00304 0.00037
Oa2  .59229 .99755 .28053      0.00311 0.00078 0.00581 -.00005 0.00165 0.00043
Obo  .81231 .11013 .19056      0.00461 0.00174 0.00805 -.00092 0.00419 -.00029
Obm  .82027 .85114 .25876      0.00542 0.00233 0.01076 0.00089 0.00582 0.00040
Oco  .01342 .30252 .27026      0.00404 0.00098 0.00754 -.00057 0.00237 -.00020
Ocm  .02398 .69389 .22991      0.00421 0.00092 0.00701 0.00039 0.00167 0.00033
Odo  .20770 .10901 .38910      0.00476 0.00175 0.00409 0.00039 0.00084 0.00044
Odm  .18364 .86819 .43609      0.00542 0.00180 0.00431 -.00055 0.00012 -.00015
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Albite
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Smith J V, Artioli G
Download am/vol71/AM71_727.pdf
American Mineralogist 71 (1986) 727-733
Low albite, NaAlSi3O8: Neutron diffraction study of crystal structure at 13 K
Locality: Amelia, Virginia, USA
Note: T = 13 K
8.1151 12.7621 7.1576 94.218 116.803 87.707 C-1
atom      x      y      z B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3)  B(2,3)
Al1o .00896 .16774 .20773 .00098 .00036 .00109 -.00009 .00049  .00008
Si1m .00359 .82131 .23701 .00084 .00038 .00094  .00003 .00043  .00010
Si2o .69041 .10996 .31323 .00080 .00033 .00113 -.00001 .00040  .00011
Si2m .67890 .88190 .35960 .00087 .00038 .00112  .00000 .00043  .00012
Na   .26470 .98952 .14441 .00162 .00118 .00320 -.00012 .00099 -.00053
OA1  .00565 .12907 .96644 .00203 .00063 .00138 -.00002 .00097  .00023
OA2  .58864 .99755 .27889 .00125 .00039 .00209 -.00005 .00059  .00020
OBo  .81264 .10794 .19019 .00157 .00070 .00254 -.00023 .00134  .00004
OBm  .81931 .85141 .25924 .00160 .00081 .00313  .00018 .00161  .00013
OCo  .01020 .30192 .26814 .00139 .00046 .00255 -.00019 .00079 -.00002
OCm  .02294 .69437 .22592 .00147 .00043 .00235  .00018 .00059  .00018
ODo  .21013 .10901 .38942 .00158 .00071 .00138  .00012 .00030  .00020
ODm  .18503 .86821 .43708 .00157 .00072 .00138 -.00020 .00008 -.00003
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Albite
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Armbruster T, Burgi H B, Kunz M, Gnos E, Bronnimann S, Lienert C
Download am/vol75/AM75_135.pdf
American Mineralogist 75 (1990) 135-140
Variation of displacement parameters in structure refinements of low albite
Note: this sample of feldspar is from Roc Tourne, France
8.137 12.785 7.1583 94.26 116.60 87.71 C-1
atom      x      y      z U(1,1) U(2,2) U(3,3)  U(1,2) U(1,3) U(2,3)
Al1o .00887 .16846 .20805  .0074  .0068  .0061 -.00086 .00310 .00045
Si1m .00375 .82051 .23737 .00679 .00646 .00552  .00111 .00299 .00080
Si2o .69162 .11021 .31466 .00612 .00547 .00729 -.00023 .00247 .00040
Si2m .68129 .88190 .36076 .00602 .00554 .00744  .00063 .00280 .00090
Na   .26799 .98865  .1465  .0136  .0471  .0315  -.0050  .0084 -.0219
OA1   .0049 .13103  .9666  .0164  .0122  .0074  -.0002  .0067  .0014
OA2  .59176 .99756  .2804  .0074  .0056  .0119   .0003  .0033  .0033
OBo   .8123 .10966  .1901  .0117  .0130  .0162  -.0040  .0093 -.0017
OBm   .8200 .85101  .2587  .0134  .0179  .0216   .0046  .0129  .0020
OCo  .01288 .30238  .2706  .0103  .0076  .0150  -.0020  .0052 -.0009
OCm  .02329 .69368  .2291  .0101  .0071  .0145   .0022  .0034  .0012
ODo  .20780 .10896  .3890  .0120  .0129  .0080   .0024  .0013  .0015
ODm   .1840 .86817  .4362  .0140  .0140  .0084  -.0026 -.0002 -.0006
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Albite
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Fleet M E
Download am/vol76/AM76_92.pdf
American Mineralogist 76 (1991) 92-99
Structures of low gallium albite (NaGaSi3O8) and intermediate germanium albite
(NaAlGe3O8): Tetrahedral-site ordering in sodium feldspar
Sample: synthetic NaAlGe3O8
8.419 13.298 7.354 94.49 116.25 90.88 C-1
atom      x      y      z  occ B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Ge1o .01066 .15782 .21137 .726 .00352 .00091 .00394 -.00020  .00182  .00006
Al1o .01066 .15782 .21137 .274 .00352 .00091 .00394 -.00020  .00182  .00006
Ge1m .00205 .81213 .22968 .625 .00370 .00101 .00383  .00053  .00157  .00017
Al1m .00205 .81213 .22968 .375 .00370 .00101 .00383  .00053  .00157  .00017
Ge2o .68829 .10494 .31238 .815 .00304 .00069 .00574  .00000  .00157  .00012
Al2o .68829 .10494 .31238 .185 .00304 .00069 .00574  .00000  .00157  .00012
Ge2m .67675  .8744 .35631 .834 .00343 .00084 .00557  .00020  .00167  .00037
Al2m .67675  .8744 .35631 .166 .00343 .00084 .00557  .00020  .00167  .00037
Na    .2732  .0187 .12118      .00717 .01761 .03897  .00441 -.00258 -.02088
OA1   .0105  .1281  .9783      .01144 .00156 .00539  .00068  .00480  .00052
OA2   .5758  .9865  .2713      .00317 .00061 .00858  .00003  .00111  .00092
OBo   .8202  .0920  .1839      .00660 .00173 .01525 -.00168  .00732 -.00193
OBm   .8080  .8363  .2443      .00721 .00400 .01925  .00155  .00889  .00063
OCo   .0033  .2837  .2875      .00576 .00094 .01119 -.00055  .00429  .00035
OCm   .0152  .6822  .1971      .00603 .00110 .00876  .00095  .00020 -.00020
ODo   .2042  .1058  .3795      .00629 .00204 .00597  .00120  .00046  .00032
ODm   .1914  .8645  .4323      .00840 .00273 .00771 -.00088 -.00116 -.00029
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Albite
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Fleet M E
Download am/vol76/AM76_92.pdf
American Mineralogist 76 (1991) 92-99
Structures of low gallium albite (NaGaSi3O8) and intermediate germanium albite
(NaAlGe3O8): Tetrahedral-site ordering in sodium feldspar
Sample: synthetic NaGaSi3O8
8.161 12.851 7.191 94.39 116.52 87.38 C-1
atom      x      y      z  occ B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Ga1o .00922 .16994 .20489 .935 .00431 .00105 .00339 -.00056  .00181 -.00003
Si1o .00922 .16994 .20489 .065 .00431 .00105 .00339 -.00056  .00181 -.00003
Si1m  .0013  .8197  .2414 .984 .00366 .00093 .00291 -.00003  .00160  .00015
Ga1m  .0013  .8197  .2414 .016 .00366 .00093 .00291 -.00003  .00160  .00015
Si2o  .6929  .1098  .3118 .975 .00333 .00079 .00382 -.00043  .00123 -.00003
Ga2o  .6929  .1098  .3118 .025 .00333 .00079 .00382 -.00043  .00123 -.00003
Si2m  .6782  .8826  .3618 .975 .00333 .00090 .00382 -.00019  .00133  .00018
Ga2m  .6782  .8826  .3618 .025 .00333 .00090 .00382 -.00019  .00133  .00018
Na    .2689  .9877  .1484      .00717 .00664 .01673 -.00158  .00405 -.00665
OA1   .0092  .1280  .9581      .00961 .00165 .00547 -.00035  .00453  .00033
OA2   .5921  .9980  .2809      .00455 .00096 .00667 -.00029  .00149  .00064
OBo   .8082  .1049  .1810      .00619 .00201 .00837 -.00131  .00427 -.00085
OBm   .8174  .8454  .2648      .00600 .00221 .01116  .00032  .00512 -.00006
OCo   .0042  .3072  .2711      .00530 .00149 .00831 -.00091  .00267 -.00030
OCm   .0280  .6940  .2288      .00572 .00126 .00655  .00011  .00192 -.00015
ODo   .2153  .1073  .3878      .00675 .00160 .00467  .00005  .00080  .00012
ODm   .1779  .8678  .4423      .00652 .00184 .00637 -.00096 -.00021  .00000
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Albite
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Downs R T, Hazen R M, Finger L W
Download am/vol79/AM79_1042.pdf
American Mineralogist 79 (1994) 1042-1052
The high-pressure crystal chemistry of low albite and the origin of the
pressure dependency of Al-Si ordering
P = 0, complete data set
Note: sample is from Crete
8.1372 12.787 7.1574 94.245 116.605 87.809 C-1
atom        x       y       z  B(1,1)  B(2,2)  B(3,3)   B(1,2)  B(1,3)   B(2,3)
Al    .008871 .168353 .208446 .003338 .001017 .003857 -.000249 .001828  .000082
Si1m  .003705 .820297 .237070 .003248 .000936 .003253  .000273 .001558  .000195
Si2o  .691614 .110197 .314831 .002986 .000819 .004423  .000003 .001521  .000180
Si2m  .681580 .881758 .360403 .002803 .000862 .004429  .000110 .001562  .000259
Na    .268233 .989297 .146106 .005908 .006434 .016852 -.000885 .004068 -.006040
O(A1) .005227 .131136 .967327 .007137 .001633 .004859 -.000025 .003387  .000532
O(A2) .591863 .997055 .280401 .003567 .001000 .005977 -.000079 .001449  .000442
O(B)o .812676 .109738 .190971 .005557 .001782 .008634 -.000638 .004309 -.000318
O(B)m .820129 .850983 .258483 .005818 .002325 .011244  .000916 .005770  .000292
O(C)o .012877 .301867 .270911 .004959 .001163 .007863 -.000305 .002748 -.000015
O(C)m .023369 .693554 .228850 .004581 .001082 .008161  .000433 .001824  .000354
O(D)o .206807 .109074 .388991 .005404 .001715 .004827  .000512 .001054  .000400
O(D)m .184026 .868037 .435997 .006104 .001866 .005118 -.000498 .000431 -.000159
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Albite
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Downs R T, Hazen R M, Finger L W
Download am/vol79/AM79_1042.pdf
American Mineralogist 79 (1994) 1042-1052
The high-pressure crystal chemistry of low albite and the origin of the
pressure dependency of Al-Si ordering
P = 0, constrained data set
Note: sample is from Crete
8.1372 12.7870 7.1574 94.245 116.605 87.809 C-1
atom        x       y       z Biso B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3)  B(2,3)
Na    .269134 .989040 .148935  3.0 .00661 .00644 .01801 -.00103 .00518 -.00592
Al1o  .008896 .168193 .207617  .64
Si1m  .003984 .820432 .236646  .63
Si2o  .692220 .110443 .315895  .59
Si2m  .681617 .881794 .360883  .61
O(A1) .006146 .131658 .968891 1.17
O(A2) .591577 .997059 .278960  .77
O(B)o .813702 .110113 .195038 1.05
O(B)m .818977 .850892 .256290 1.19
O(C)o .012388 .301848 .269006  .96
O(C)m .023273 .693405 .227539  .92
O(D)o .206430 .108942 .386309 1.19
O(D)m .180922 .868009 .428643 1.44
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Albite
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Downs R T, Hazen R M, Finger L W
Download am/vol79/AM79_1042.pdf
American Mineralogist 79 (1994) 1042-1052
The high-pressure crystal chemistry of low albite and the origin of the
pressure dependency of Al-Si ordering
P = .44 GPa
Note: sample is from Crete
8.1104 12.7710 7.1482 94.244 116.667 87.835 C-1
atom        x       y       z Biso B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3)  B(2,3)
Na    .265985 .989646 .141112  3.6 .00639 .00629 .03100 -.00146 .00792 -.00681
Al1o  .008580 .168118 .208646  .66
Si1m  .003234 .820428 .236432  .65
Si2o  .691465 .109935 .315916  .58
Si2m  .680954 .881794 .363229  .58
O(A1) .006703 .131482 .968873 1.10
O(A2) .589621 .997326 .279411  .72
O(B)o .811916 .109127 .191438  .99
O(B)m .818838 .851013 .256494 1.18
O(C)o .010657 .301451 .269789  .86
O(C)m .024408 .694022 .233163 1.02
O(D)o .203183 .108542 .377684 1.25
O(D)m .176776 .866816 .422810 1.42
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Albite
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Downs R T, Hazen R M, Finger L W
Download am/vol79/AM79_1042.pdf
American Mineralogist 79 (1994) 1042-1052
The high-pressure crystal chemistry of low albite and the origin of the
pressure dependency of Al-Si ordering
P = 1.22 GPa
Note: sample is from Crete
8.0510 12.7336 7.1242 94.252 116.784 87.909 C-1
atom        x       y       z Biso B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3)  B(2,3)
Na    .263883 .990707 .141914  4.2 .00916 .00576 .04824 -.00070 .01680 -.00482
Al1o  .007189 .167548 .206792  .57
Si1m  .001821 .820863 .236207  .54
Si2o  .690937 .109614 .316885  .52
Si2m  .676495 .881260 .360042  .56
O(A1) .005997 .131056 .970082  .93
O(A2) .584997 .996465 .276788  .48
O(B)o .810221 .106478 .188614 1.05
O(B)m .814714 .850320 .250473 1.24
O(C)o .008334 .300961 .272668  .86
O(C)m .021481 .694079 .228248  .88
O(D)o .210446 .108983 .391119 1.08
O(D)m .174357 .866692 .423200 1.39
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Albite
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Downs R T, Hazen R M, Finger L W
Download am/vol79/AM79_1042.pdf
American Mineralogist 79 (1994) 1042-1052
The high-pressure crystal chemistry of low albite and the origin of the
pressure dependency of Al-Si ordering
P = 2.68 GPa
Note: sample is from Crete
7.9567 12.6784 7.0897 94.217 116.992 88.025 C-1
atom         x       y       z Biso B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3)  B(2,3)
Na     .258665 .993009 .139165  3.8 .01037 .00479 .04300 -.00013 .01596 -.00440
Al1o   .005804 .166405 .206524  .60
Si1m  -.000254 .820598 .236094  .54
Si2o   .687345 .108455 .311366  .49
Si2m   .671640 .880229 .359855  .48
O(A1)  .007293 .129230 .967437  .90
O(A2)  .581026 .996411 .282414  .68
O(B)o  .807880 .101963 .183963  .99
O(B)m  .811602 .849250 .255032 1.27
O(C)o -.000742 .300211 .272186  .88
O(C)m  .019268 .693517 .223978  .78
O(D)o  .211417 .110305 .386304 1.32
O(D)m  .178189 .868105 .429146 1.59
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Albite
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Downs R T, Hazen R M, Finger L W
Download am/vol79/AM79_1042.pdf
American Mineralogist 79 (1994) 1042-1052
The high-pressure crystal chemistry of low albite and the origin of the
pressure dependency of Al-Si ordering
P = 3.78 GPa
Note: sample is from Crete
7.8925 12.6400 7.0667 94.177 117.074 88.128 C-1
atom         x       y       z Biso B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3)  B(2,3)
Na     .259554 .993991 .146231  2.4 .00585 .00467 .01862 -.00075 .00565 -.00564
Al1o   .004071 .165725 .205574  .62
Si1m  -.003004 .820357 .235064  .60
Si2o   .684489 .107146 .307435  .57
Si2m   .665743 .879248 .355477  .53
O(A1)  .009339 .127420 .968440  .85
O(A2)  .577834 .996000 .280509  .46
O(B)o  .807883 .099549 .185352 1.04
O(B)m  .805414 .848356 .250659 1.31
O(C)o -.006564 .299215 .270386  .85
O(C)m  .016696 .693325 .222220  .87
O(D)o  .212359 .111803 .387660 1.08
O(D)m  .177043 .869401 .434067 1.34
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Albite
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Meneghinello E, Alberti A, Cruciani G
Download am/vol84/AM84_1144.pdf
American Mineralogist 84 (1999) 1144-1151
Order-disorder process in the tetrahedral sites af albite
Sample: untreated
Note: this sample of feldspar is from Stintino, Sardinia, Italy
8.133 12.773 7.159 94.23 116.64 87.72 C-1
atom     x     y     z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Allo .0090 .1684 .2085 .96  .0089  .0080  .0070 -.0013  .0042  .0005
Silo .0090 .1684 .2085 .04  .0089  .0080  .0070 -.0013  .0042  .0005
Silm .0039 .8205 .2373 .97  .0080  .0073  .0063  .0010  .0038  .0011
Allm .0039 .8205 .2373 .03  .0080  .0073  .0063  .0010  .0038  .0011
Si2o .6917 .1103 .3150      .0078  .0061  .0083 -.0008  .0034  .0006
Si2m .6815 .8818 .3608 .99  .0071  .0063  .0084  .0005  .0038  .0013
Al2m .6815 .8818 .3608 .01  .0071  .0063  .0084  .0005  .0038  .0013
Na   .2681 .9888 .1462      .0152  .0476  .0320 -.0053  .0093 -.0219
OA1  .0045 .1310 .9663      .0196  .0120  .0079  .0001  .0083  .0014
OA2  .5912 .9973 .2805      .0077  .0066  .0112  .0000  .0034  .0018
OBo  .8126 .1095 .1907      .0126  .0142  .0174 -.0037  .0105 -.0011
OBm  .8201 .8509 .2591      .0147  .0160  .0243  .0048  .0139  .0037
OCo  .0131 .3021 .2698      .0113  .0086  .0154 -.0020  .0063 -.0010
OCm  .0239 .6937 .2288      .0122  .0081  .0145  .0023  .0051  .0025
ODo  .2074 .1091 .3891      .0128  .0132  .0081  .0012  .0023  .0018
ODm  .1832 .8678 .4365      .0141  .0136  .0095 -.0025  .0000 -.0004
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Albite
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Meneghinello E, Alberti A, Cruciani G
Download am/vol84/AM84_1144.pdf
American Mineralogist 84 (1999) 1144-1151
Order-disorder process in the tetrahedral sites af albite
Sample: 1050-3d
Note: this sample of feldspar is from Stintino, Sardinia, Italy
8.141 12.795 7.145 94.04 116.56 87.98 C-1
atom     x     y     z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Al1o .0088 .1690 .2090 .91  .0101  .0095  .0082 -.0015  .0045  .0008
Si1o .0088 .1690 .2090 .09  .0101  .0095  .0082 -.0015  .0045  .0008
Si1m .0039 .8200 .2366 .96  .0090  .0088  .0073  .0009  .0041  .0014
Al1m .0039 .8200 .2366 .04  .0090  .0088  .0073  .0009  .0041  .0014
Si2o .6921 .1104 .3159 .98  .0089  .0082  .0094 -.0002  .0038  .0010
Al2o .6921 .1104 .3159 .02  .0089  .0082  .0094 -.0002  .0038  .0010
Si2m .6825 .8816 .3600 .97  .0086  .0082  .0098  .0006  .0042  .0016
Al2m .6825 .8816 .3600 .03  .0086  .0082  .0098  .0006  .0042  .0016
Na   .2691 .9898 .1460      .0150  .0592  .0355 -.0045  .0087 -.0262
OA1  .0048 .1320 .9681      .0206  .0156  .0092 -.0002  .0079  .0012
OA2  .5935 .9971 .2807      .0101  .0090  .0138  .0000  .0045  .0027
OBo  .8134 .1108 .1911      .0144  .0168  .0195 -.0039  .0112 -.0005
OBm  .8205 .8513 .2573      .0158  .0189  .0246  .0043  .0135  .0014
OCo  .0142 .3017 .2705      .0128  .0112  .0167 -.0024  .0062 -.0008
OCm  .0240 .6933 .2296      .0126  .0101  .0150  .0026  .0037  .0018
ODo  .2059 .1094 .3885      .0147  .0157  .0101  .0007  .0028  .0018
ODm  .1833 .8684 .4345      .0162  .0159  .0113 -.0025  .0010 -.0014
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Albite
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Meneghinello E, Alberti A, Cruciani G
Download am/vol84/AM84_1144.pdf
American Mineralogist 84 (1999) 1144-1151
Order-disorder process in the tetrahedral sites af albite
Sample: 1060-6d
Note: this sample of feldspar is from Stintino, Sardinia, Italy
8.170 12.811 7.141 93.79 116.53 88.09 C-1
atom     x     y     z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Al1o .0091 .1692 .2102 .84  .0121  .0097  .0094 -.0029  .0058  .0004
Si1o .0091 .1692 .2102 .16  .0121  .0097  .0094 -.0029  .0058  .0004
Si1m .0042 .8194 .2356 .93  .0108  .0097  .0085  .0013  .0052  .0011
Al1m .0042 .8194 .2356 .07  .0108  .0097  .0085  .0013  .0052  .0011
Si2o .6930 .1109 .3179 .95  .0110  .0075  .0111 -.0009  .0050  .0006
Al2o .6930 .1109 .3179 .05  .0110  .0075  .0111 -.0009  .0050  .0006
Si2m .6842 .8815 .3588 .96  .0103  .0080  .0111 -.0003  .0049  .0011
Al2m .6842 .8815 .3588 .04  .0103  .0080  .0111 -.0003  .0049  .0011
Na   .2706 .9912 .1456      .0147  .0668  .0419 -.0061  .0099 -.0331
OA1  .0046 .1335 .9711      .0253  .0156  .0134 -.0016  .0116  .0021
OA2  .5944 .9964 .2813      .0122  .0091  .0169 -.0008  .0054  .0012
OBo  .8144 .1126 .1936      .0177  .0191  .0230 -.0033  .0132  .0009
OBm  .8211 .8515 .2553      .0192  .0189  .0305  .0032  .0170 -.0001
OCo  .0154 .3013 .2697      .0146  .0147  .0194 -.0031  .0081 -.0021
OCm  .0244 .6926 .2308      .0149  .0103  .0194  .0024  .0062  .0019
ODo  .2036 .1111 .3900      .0173  .0146  .0137 -.0022  .0041  .0020
ODm  .1830 .8683 .4330      .0165  .0171  .0118 -.0020  .0018 -.0003
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Albite
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Meneghinello E, Alberti A, Cruciani G
Download am/vol84/AM84_1144.pdf
American Mineralogist 84 (1999) 1144-1151
Order-disorder process in the tetrahedral sites af albite
Sample: 1070-7d
Note: this sample of feldspar is from Stintino, Sardinia, Italy
8.140 12.791 7.132 93.94 116.54 88.46 C-1
atom     x     y     z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Al1o .0089 .1681 .2105 .78  .0115  .0107  .0082 -.0028  .0049  .0005
Si1o .0089 .1681 .2105 .22  .0115  .0107  .0082 -.0028  .0049  .0005
Si1m .0039 .8185 .2348 .92  .0100  .0103  .0082  .0015  .0044  .0015
Al1m .0039 .8185 .2348 .08  .0100  .0103  .0082  .0015  .0044  .0015
Si2o .6921 .1100 .3172 .94  .0101  .0085  .0103 -.0010  .0042  .0007
Al2o .6921 .1100 .3172 .06  .0101  .0085  .0103 -.0010  .0042  .0007
Si2m .6837 .8807 .3585 .92  .0097  .0083  .0106  .0001  .0044  .0013
Al2m .6837 .8807 .3585 .08  .0097  .0083  .0106  .0001  .0044  .0013
Na   .2704 .9937 .1441      .0161  .0811  .0470 -.0053  .0093 -.0413
OA1  .0057 .1331 .9728      .0241  .0185  .0132 -.0006  .0111  .0025
OA2  .5930 .9955 .2803      .0116  .0107  .0147 -.0011  .0042  .0024
OBo  .8153 .1109 .1933      .0171  .0217  .0203 -.0054  .0120 -.0003
OBm  .8206 .8501 .2546      .0173  .0207  .0252  .0034  .0134  .0009
OCo  .0140 .2992 .2720      .0142  .0159  .0172 -.0030  .0060 -.0015
OCm  .0237 .6920 .2279      .0156  .0111  .0176  .0022  .0049  .0019
ODo  .2035 .1102 .3882      .0165  .0166  .0122  .0003  .0040  .0024
ODm  .1842 .8682 .4324      .0178  .0170  .0122 -.0025  .0006 -.0009
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Albite
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Meneghinello E, Alberti A, Cruciani G
Download am/vol84/AM84_1144.pdf
American Mineralogist 84 (1999) 1144-1151
Order-disorder process in the tetrahedral sites af albite
Sample: 1080-7d
Note: this sample of feldspar is from Stintino, Sardinia, Italy
8.142 12.782 7.136 94.00 116.51 88.13 C-1
atom     x     y     z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Al1o .0089 .1687 .2098 .90  .0093  .0091  .0068 -.0018  .0037  .0005
Si1o .0089 .1687 .2098 .10  .0093  .0091  .0068 -.0018  .0037  .0005
Si1m .0041 .8193 .2357 .95  .0085  .0085  .0066  .0012  .0037  .0010
Al1m .0041 .8193 .2357 .05  .0085  .0085  .0066  .0012  .0037  .0010
Si2o .6923 .1103 .3167 .98  .0082  .0071  .0086 -.0005  .0033  .0006
Al2o .6923 .1103 .3167 .02  .0082  .0071  .0086 -.0005  .0033  .0006
Si2m .6833 .8812 .3593 .97  .0081  .0071  .0088  .0004  .0036  .0011
Al2m .6833 .8812 .3593 .03  .0081  .0071  .0088  .0004  .0036  .0011
Na   .2699 .9911 .1453      .0123  .0666  .0389 -.0036  .0070 -.0326
OA1  .0048 .1323 .9700      .0197  .0161  .0102  .0004  .0083  .0027
OA2  .5941 .9966 .2812      .0105  .0081  .0129  .0003  .0041  .0024
OBo  .8138 .1112 .1923      .0155  .0167  .0186 -.0037  .0108 -.0003
OBm  .8203 .8504 .2558      .0152  .0198  .0246  .0042  .0135  .0009
OCo  .0149 .3010 .2708      .0114  .0128  .0163 -.0022  .0053 -.0013
OCm  .0237 .6928 .2291      .0116  .0104  .0155  .0021  .0031  .0011
ODo  .2045 .1103 .3888      .0148  .0162  .0096  .0016  .0024  .0020
ODm  .1839 .8682 .4335      .0147  .0153  .0106 -.0014  .0000 -.0007
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Albite
Download hom/albite.pdf
Meneghinello E, Alberti A, Cruciani G
Download am/vol84/AM84_1144.pdf
American Mineralogist 84 (1999) 1144-1151
Order-disorder process in the tetrahedral sites af albite
Sample: 1080-10d
Note: this sample of feldspar is from Stintino, Sardinia, Italy
8.154 12.794 7.129 93.81 116.54 88.48 C-1
atom     x     y     z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Al1o .0095 .1685 .2109 .78  .0115  .0101  .0085 -.0032  .0055  .0001
Si1o .0095 .1685 .2109 .22  .0115  .0101  .0085 -.0032  .0055  .0001
Si1m .0045 .8186 .2343 .90  .0102  .0102  .0077  .0014  .0045  .0008
Al1m .0045 .8186 .2343 .10  .0102  .0102  .0077  .0014  .0045  .0008
Si2o .6922 .1102 .3180 .94  .0098  .0078  .0110 -.0009  .0046  .0004
Al2o .6922 .1102 .3180 .06  .0098  .0078  .0110 -.0009  .0046  .0004
Si2m .6843 .8808 .3581 .94  .0094  .0080  .0110 -.0007  .0048  .0007
Al2m .6843 .8808 .3581 .06  .0094  .0080  .0110 -.0007  .0048  .0007
Na   .2705 .9932 .1441      .0148  .0793  .0496 -.0074  .0010 -.0427
OA1  .0052 .1337 .9735      .0258  .0146  .0156 -.0033  .0131  .0018
OA2  .5937 .9953 .2805      .0106  .0104  .0173 -.0016  .0055  .0016
OBo  .8154 .1113 .1942      .0182  .0194  .0244 -.0046  .0148 -.0007
OBm  .8199 .8504 .2527      .0182  .0201  .0323  .0020  .0179 -.0014
OCo  .0151 .2993 .2705      .0147  .0151  .0210 -.0047  .0083 -.0037
OCm  .0247 .6920 .2284      .0149  .0115  .0192  .0030  .0055  .0012
ODo  .2027 .1110 .3891      .0157  .0156  .0127 -.0010  .0040  .0018
ODm  .1848 .8686 .4315      .0152  .0168  .0124 -.0013  .0005 -.0017
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Albite
Download hom/albite.pdf
Meneghinello E, Alberti A, Cruciani G
Download am/vol84/AM84_1144.pdf
American Mineralogist 84 (1999) 1144-1151
Order-disorder process in the tetrahedral sites af albite
Sample: 1090-7d
Note: this sample of feldspar is from Stintino, Sardinia, Italy
8.160 12.802 7.130 93.72 116.42 88.61 C-1
atom     x     y     z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Al1o .0088 .1691 .2112 .75  .0122  .0120  .0089 -.0026  .0050  .0008
Si1o .0088 .1691 .2112 .25  .0122  .0120  .0089 -.0026  .0050  .0008
Si1m .0043 .8182 .2340 .90  .0112  .0116  .0088  .0013  .0050  .0016
Al1m .0043 .8182 .2340 .10  .0112  .0116  .0088  .0013  .0050  .0016
Si2o .6927 .1104 .3191 .92  .0109  .0091  .0115 -.0004  .0049  .0012
Al2o .6927 .1104 .3191 .08  .0109  .0091  .0115 -.0004  .0049  .0012
Si2m .6850 .8807 .3573 .93  .0107  .0090  .0114  .0007  .0047  .0015
Al2m .6850 .8807 .3573 .07  .0107  .0090  .0114  .0007  .0047  .0015
Na   .2711 .9946 .1432      .0146  .0798  .0476 -.0018  .0070 -.0372
OA1  .0051 .1339 .9752      .0257  .0209  .0153  .0013  .0118  .0043
OA2  .5950 .9956 .2807      .0135  .0113  .0170 -.0002  .0053  .0027
OBo  .8158 .1123 .1952      .0182  .0239  .0232 -.0D47  .0130  .0014
OBm  .8204 .8510 .2519      .0177  .0218  .0294  .0045  .0150  .0018
OCo  .0162 .2993 .2710      .0148  .0167  .0183 -.0026  .0054 -.0009
OCm  .0236 .6920 .2292      .0145  .0132  .0187  .0027  .0048  .0017
ODo  .2021 .1107 .3894      .0168  .0186  .0139  .0010  .0031  .0039
ODm  .1840 .8682 .4308      .0179  .0191  .0127 -.0023  .0013 -.0009
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Albite
Download hom/albite.pdf
Meneghinello E, Alberti A, Cruciani G
Download am/vol84/AM84_1144.pdf
American Mineralogist 84 (1999) 1144-1151
Order-disorder process in the tetrahedral sites af albite
Sample: 1090-12d
Note: this sample of feldspar is from Stintino, Sardinia, Italy
8.152 12.831 7.110 93.46 116.52 89.72 C-1
atom     x     y     z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Al1o .0091 .1667 .2135 .43  .0117  .0130  .0096 -.0019  .0050  .0013
Si1o .0091 .1667 .2135 .57  .0117  .0130  .0096 -.0019  .0050  .0013
Si1m .0049 .8159 .2307 .75  .0112  .0126  .0093  .0026  .0050  .0020
Al1m .0049 .8159 .2307 .25  .0112  .0126  .0093  .0026  .0050  .0020
Si2o .6914 .1089 .3203 .83  .0112  .0105  .0122  .0003  .0051  .0014
Al2o .6914 .1089 .3203 .17  .0112  .0105  .0122  .0003  .0051  .0014
Si2m .6851 .8787 .3549 .85  .0114  .0100  .0121  .0010  .0052  .0020
Al2m .6851 .8787 .3549 .15  .0114  .0100  .0121  .0010  .0052  .0020
Na   .2727 .0020 .1373      .0141  .1261  .0703  .0037  .0052 -.0620
OA1  .0048 .1349 .9810      .0241  .0203  .0180  .0044  .0118  .0043
OA2  .5944 .9929 .2795      .0126  .0151  .0193  .0011  .0062  .0036
OBo  .8196 .1094 .1976      .0171  .0279  .0257 -.0031  .0129  .0037
OBm  .8183 .8487 .2475      .0167  .0292  .0316  .0072  .0149  .0051
OCo  .0177 .2929 .2740      .0147  .0213  .0191 -.0026  .0062 -.0015
OCm  .0218 .6895 .2223      .0158  .0170  .0202  .0039  .0050  .0024
ODo  .1983 .1113 .3889      .0181  .0204  .0151  .0031  .0058  .0043
ODm  .1872 .8681 .4282      .0180  .0192  .0162 -.0007  .0032 -.0028
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Albite
Download hom/albite.pdf
Benusa M D, Angel R J, Ross N L
Download am/vol90/AM90_1115.pdf
American Mineralogist 90 (2005) 1115-1120
Compression of albite, NaAlSi3O8
Sample: Amelia Court House, Virginia locality P = 6.489 GPa
7.7176 12.5592 7.0113 93.963 117.177 88.132 C-1
atom      x      y     z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na    .2490  .9935 .1490  2.5  .0094  .0034  .0261 -.0003  .0104 -.0032
Al1o -.0021 .16648 .2025  .69
Si1m -.0096 .82031 .2349  .69
Si2o  .6867 .10437 .3121  .44
Si2m  .6558 .87698 .3551  .50
Oa1   .0115  .1286  .968  .98
Oa2   .5675  .9956  .284  .60
Obo   .7989  .0923  .168  .86
Obm   .7872  .8436  .237 1.10
Oco  -.0285  .2993  .265  .78
Ocm   .0150  .6929  .223 1.13
Odo   .2184  .1171  .396 1.35
Odm   .1618  .8737  .431 1.68
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Albite
Download hom/albite.pdf
Benusa M D, Angel R J, Ross N L
Download am/vol90/AM90_1115.pdf
American Mineralogist 90 (2005) 1115-1120
Compression of albite, NaAlSi3O8
Sample: Amelia Court House, Virginia locality P = 8.411 GPa
7.5713 12.5170 6.9697 93.797 117.448 87.508 C-1
atom      x      y     z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na    .2419  .9924 .1592 2.06  .0061  .0028  .0226  .0008  .0075 -.0012
Al1o -.0102 .16866 .1994  .53
Si1m -.0185 .82205 .2325  .48
Si2o  .6853 .10184 .3109  .43
Si2m  .6446 .87510 .3493  .47
Oa1   .0137  .1305  .971 1.03
Oa2   .5636  .9968  .293  .57
Obo   .7927  .0899  .162  .89
Obm   .7637  .8399  .212  .95
Oco  -.0438  .3017  .266  .65
Ocm   .0297  .6969  .255  .97
Odo   .2133  .1229  .397 1.33
Odm   .1475  .8860  .440 1.61
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Albite
Download hom/albite.pdf
Benusa M D, Angel R J, Ross N L
Download am/vol90/AM90_1115.pdf
American Mineralogist 90 (2005) 1115-1120
Compression of albite, NaAlSi3O8
Sample: Amelia Court House, Virginia locality P = 9.431 GPa
7.5028 12.4933 6.9463 93.903 117.791 86.786 C-1
atom      x      y     z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na    .2367  .9905 .1659 1.11  .0027  .0018  .0088  .0003  .0010 -.0011
Al1o -.0159 .17068 .1989  .58
Si1m -.0233 .82420 .2310  .50
Si2o  .6907 .10098 .3197  .49
Si2m  .6399 .87498 .3462  .45
Oa1   .0136  .1329  .969  .93
Oa2   .5569  .9985 .2912  .60
Obo   .7858  .0904  .155  .86
Obm   .7530  .8395  .202  .92
Oco  -.0550  .3039 .2624  .69
Ocm   .0370  .7006  .271  .92
Odo   .2103  .1278  .397 1.09
Odm   .1306  .8953  .434 1.15
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Albite
Download hom/albite.pdf
Kroll H, Flogel J, Breit U, Lons J, Pentinghaus H
 
European Journal of Mineralogy 3 (1991) 739-749
Order and anti-order in Ge-substituted alkali feldspars
Sample: Na[AlGe3O8] synthesized at 980 deg C
8.411 13.291 7.342 94.38 116.28 90.87 C-1
atom       x      y      z  occ Biso
Na1    .2687 -.0197  .1739  .25 1.58
Na2    .2821  .0448 .08186  .25 1.58
Na3    .2782  .0294  .1148  .25 1.58
Na4    .2629  .0099  .1281  .25 1.58
AlT10 .01093 .15791 .21195 .212  .74
GeT10 .01093 .15791 .21195 .788  .74
AlT1m .00204 .81216 .22975 .436  .76
GeT1m .00204 .81216 .22975 .564  .76
AlT20 .68800 .10497 .31316 .150  .81
GeT20 .68800 .10497 .31316 .850  .81
AlT2m .67649 .87436 .35526 .202  .78
GeT2m .67649 .87436 .35526 .798  .78
OA1    .0108  .1274  .9790      1.52
OA2    .5751  .9865  .2708      1.05
OB0    .8204  .0914  .1862      1.65
OBm    .8092  .8363  .2449      2.40
OC0    .0023  .2837  .2846      1.25
OCm    .0148  .6817  .1947      1.39
OD0    .2048  .1059  .3795      1.56
ODm    .1920  .8653  .4308      2.06
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Albite
Download hom/albite.pdf
Kroll H, Flogel J, Breit U, Lons J, Pentinghaus H
 
European Journal of Mineralogy 3 (1991) 739-749
Order and anti-order in Ge-substituted alkali feldspars
Sample: Na[AlSiGe2O8] synthesized at 600 deg C
8.3258 13.1590 7.2734 94.172 116.306 90.693 C-1
atom       x      y      z  occ Biso
Na0    .2731  .0154  .1247   .2 7.09
Na1    .2746 -.0259  .1777   .2 1.95
Na2    .2887  .0407  .1000   .2  .96
Na3    .2706  .0275  .1056   .2  .86
Na4    .2622  .0017  .1385   .2  .95
AlT10 .00923 .16045 .21214  .27  .80
SiT10 .00923 .16045 .21214  .19  .80
GeT10 .00923 .16045 .21214 .540  .80
AlT1m .00296 .81312 .23009  .29  .78
SiT1m .00296 .81312 .23009  .34  .78
GeT1m .00296 .81312 .23009 .372  .78
AlT20 .68842 .10611 .31510  .21  .81
SiT20 .68842 .10611 .31510  .26  .81
GeT20 .68842 .10611 .31510 .532  .81
AlT2m .67885 .87556 .35525  .23  .80
SiT2m .67885 .87556 .35525  .21  .80
GeT2m .67885 .87556 .35525 .556  .80
OA1    .0073  .1298  .9792      1.66
OA2    .5807  .9887  .2735      1.31
OB0    .8185  .0970  .1877      1.76
OBm    .8116  .8407  .2444      2.41
OC0    .0057  .2867  .2830      1.44
OCm    .0182  .6839  .2049      1.64
OD0    .2011  .1077  .3810      1.54
ODm    .1892  .8660  .4314      2.05
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Albite
Download hom/albite.pdf
Kroll H, Flogel J, Breit U, Lons J, Pentinghaus H
 
European Journal of Mineralogy 3 (1991) 739-749
Order and anti-order in Ge-substituted alkali feldspars
Sample: Na[AlSiGe2O8] synthesized at 1040 deg C
8.3314 13.1562 7.2657 94.255 116.300 90.563 C-1
atom       x      y      z  occ Biso
Na0    .2783  .0150  .1262   .2 8.70
Na1    .2743 -.0249  .1804   .2 1.51
Na2    .2841  .0425  .0851   .2 1.51
Na3    .2746  .0279  .1160   .2 1.51
Na4    .2648  .0038  .1360   .2 1.51
AlT10 .00970 .16048 .21229  .30  .76
SiT10 .00970 .16048 .21229  .19  .76
GeT10 .00970 .16048 .21229 .511  .76
AlT1m .00281 .81284 .22977  .28  .72
SiT1m .00281 .81284 .22977  .28  .72
GeT1m .00281 .81284 .22977 .439  .72
AlT20 .68865 .10592 .31458  .19  .79
SiT20 .68865 .10592 .31458  .29  .79
GeT20 .68865 .10592 .31458 .519  .79
AlT2m .67883 .87553 .35555  .23  .78
SiT2m .67883 .87553 .35555  .24  .78
GeT2m .67883 .87553 .35555 .531  .78
OA1    .0081  .1289  .9782      1.68
OA2    .5815  .9883  .2740      1.22
OB0    .8195  .0974  .1882      1.84
OBm    .8127  .8402  .2455      2.38
OC0    .0076  .2863  .2837      1.44
OCm    .0181  .6837  .2042      1.68
OD0    .2006  .1077  .3807      1.62
ODm    .1887  .8655  .4314      2.10
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Albite
Download hom/albite.pdf
Gualtieri A F
 
Journal of Applied Crystallography 33 (2000) 267-278
Accuracy of XRPD QPA using the combined Rietveld-RIR method
Locality: Baveno, Novara, Italy
8.14588 12.7973 7.15775 94.2451 116.600 87.800 C-1
atom      x      y     z  occ Uiso
Na    .2791 -.0126 .1794  .98 .096
Ca    .2791 -.0126 .1794  .02 .096
Si1   .0132  .1657 .2113 .745 .054
Al1   .0132  .1657 .2113 .255 .054
Si2   .0100  .8203 .2404 .745 .049
Al2   .0100  .8203 .2404 .255 .049
Si3   .6857  .1110 .3161 .745 .066
Al3   .6857  .1110 .3161 .255 .066
Si4   .6802  .8844 .3598 .745 .044
Al4   .6802  .8844 .3598 .255 .044
O1   -.0044  .1354 .9630      .073
O2    .5848  .9947 .2563      .042
O3    .8188  .1101 .2014      .071
O4    .8166  .8449 .2552      .015
O5    .0112  .6905 .2209      .037
O6    .2043  .1111 .3856      .022
O7    .1862  .8702 .4297      .027
O8    .0069  .3008 .2619      .052
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Total number of retrieved datasets: 47
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