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Feldspar |
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Viswanathan K, Brandt K |
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American Mineralogist 65 (1980) 472-476 |
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The crystal structure of ternary (Ba,K,Na)-feldspar and its significance |
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_database_code_amcsd 0000781 |
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8.516 13.023 7.206 90 115.9 90 C2/m |
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atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Si1 .0087 .1831 .2240 .705 0.0055 0.0014 0.0041 -.0005 0.0027 -.0003 |
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Al1 .0087 .1831 .2240 .295 0.0055 0.0014 0.0041 -.0005 0.0027 -.0003 |
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Si2 .7046 .1175 .3445 .705 0.0052 0.0012 0.0052 0.0000 0.0024 0.0001 |
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Al2 .7046 .1175 .3445 .295 0.0052 0.0012 0.0052 0.0000 0.0024 0.0001 |
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K .2826 0 .1345 .590 0.0067 0.0033 0.0114 0 0.0031 0 |
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Na .2826 0 .1345 .220 0.0067 0.0033 0.0114 0 0.0031 0 |
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Ba .2826 0 .1345 .190 0.0067 0.0033 0.0114 0 0.0031 0 |
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Oa1 0 .1429 0 0.0107 0.0023 0.0094 0 0.0055 0 |
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Oa2 .6273 0 .2864 0.0093 0.0016 0.0109 0 0.0029 0 |
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Ob .8260 .1422 .2270 0.0089 0.0037 0.0120 -.0006 0.0064 0.0000 |
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Oc .0308 .3101 .2567 0.0081 0.0022 0.0100 -.0005 0.0038 -.0005 |
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Od .1841 .1254 .4045 0.0085 0.0024 0.0072 -.0003 0.0023 0.0004 |
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Magnesiocarpholite |
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Viswanathan K |
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American Mineralogist 66 (1981) 1080-1085 |
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The crystal structure of a Mg-rich carpholite |
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Locality: southeast Sfinari, West Crete |
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_database_code_amcsd 0000849 |
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13.714 20.079 5.105 90 90 90 *Ccca |
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0 -.25 -.25 |
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atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Mg 0 .8754 .75 .796 0.00118 0.00059 0.00307 0 0.00027 0 |
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Fe 0 .8754 .75 .204 0.00118 0.00059 0.00307 0 0.00027 0 |
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Al1 .1909 .75 .75 0.00112 0.00050 0.00234 0 0 0.00012 |
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Al2 0 .9614 .25 0.00104 0.00055 0.00149 0 -.00012 0 |
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Si .1935 .8798 .4172 0.00096 0.00050 0.00168 0.00004 0.00006 0.00007 |
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OH1 .0997 .8099 .8794 0.00153 0.00082 0.00669 0.00019 0.00000 0.00004 |
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OH2 .0684 .9657 .9276 0.00113 0.00061 0.00424 -.00004 -.00005 0.00004 |
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O1 .2060 .7997 .4313 0.00145 0.00047 0.00329 0.00000 0.00025 0.00020 |
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O2 .0803 .8993 .4099 0.00108 0.00066 0.00424 0.00012 -.00003 0.00029 |
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O3 .2485 .9129 .6707 0.00138 0.00068 0.00333 -.00010 -.00061 0.00001 |
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Hyalophane |
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Viswanathan K, Kielhorn H M |
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American Mineralogist 68 (1983) 122-124 |
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Al,Si distribution in a ternary (Ba,K,Na)-feldspar as determined by crystal |
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structure refinement |
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Celsian-rich |
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Locality: Yugoslavia |
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_database_code_amcsd 0000887 |
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8.544 13.030 7.195 90 115.68 90 C2/m |
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atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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Al1 .0089 .1835 .2242 .437 0.0039 0.0011 0.0029 -.0004 0.0024 -.0002 |
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Si1 .0089 .1835 .2242 .563 0.0039 0.0011 0.0029 -.0004 0.0024 -.0002 |
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Al2 .7050 .1179 .3454 .268 0.0035 0.0008 0.0036 -.0001 0.0021 0.0000 |
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Si2 .7050 .1179 .3454 .732 0.0035 0.0008 0.0036 -.0001 0.0021 0.0000 |
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Ba .2828 0 .1331 .400 0.0048 0.0024 0.0084 0 0.0027 0 |
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K .2828 0 .1331 .470 0.0048 0.0024 0.0084 0 0.0027 0 |
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Na .2828 0 .1331 .130 0.0048 0.0024 0.0084 0 0.0027 0 |
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Oa1 0 .1428 0 0.0078 0.0017 0.0064 0 0.0048 0 |
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Oa2 .6264 0 .2867 0.0061 0.0008 0.0088 0 0.0022 0 |
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Ob .8273 .1415 .2274 0.0069 0.0026 0.0091 -.0007 0.0053 0.0002 |
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Oc .0303 .3104 .2558 0.0064 0.0015 0.0088 -.0005 0.0041 -.0004 |
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Od .1842 .1261 .4030 0.0039 0.0011 0.0029 -.0004 0.0024 -.0002 |
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Uranophane - beta |
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Viswanathan K, Harneit O |
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American Mineralogist 71 (1986) 1489-1493 |
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Refined crystal structure of beta-uranophane, Ca(UO2)2(SiO3OH)2.5H2O |
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Locality: Roessing, South-West Africa |
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_database_code_amcsd 0001061 |
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13.966 15.443 6.632 90 91.38 90 P2_1/a |
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atom x y z Uiso |
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Ca .1899 .4848 .2821 .019 |
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U1 .0194 .26 .2631 .008 |
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U2 .2313 .7397 .4707 .007 |
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Si1 .0181 .2224 .7293 .014 |
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Si2 .2667 .1944 .0638 .015 |
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O1 .258 .354 .479 .025 |
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O2 .989 .146 .231 .020 |
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O3 .727 .877 .429 .019 |
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O4 .051 .373 .300 .016 |
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O5 .182 .220 .208 .016 |
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O6 .889 .765 .409 .025 |
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O7 .358 .200 .223 .011 |
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O8 .567 .747 .420 .030 |
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O9 .977 .716 .075 .018 |
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O10 .725 .744 .138 .020 |
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OH1 .982 .880 .211 .027 |
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OH2 .745 .907 .004 .021 |
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OW1 .544 .949 .167 .027 |
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OW2 .360 .491 .325 .034 |
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OW3 .804 .591 .032 .043 |
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OW4 .875 .502 .37 .029 |
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OW5 .131 .005 .231 .053 |
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