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Foitite |
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MacDonald D J, Hawthorne F C, Grice J D |
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American Mineralogist 78 (1993) 1299-1303 |
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Foitite, _[Fe2(Al,Fe)]Al6Si6O18(BO3)3(OH)4, a new alkali-deficient |
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tourmaline: Description and crystal structure |
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15.967 15.967 7.126 90 90 120 R3m |
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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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NaX 0 0 .84080 .25 .0282 .0282 .0237 .0141 0 0 |
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AlY .06223 .93777 .4485 .333 .0060 .0060 .0122 .0021 .0005 -.0005 |
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FeY .06223 .93777 .4485 .497 .0060 .0060 .0122 .0021 .0005 -.0005 |
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MnY .06223 .93777 .4485 .080 .0060 .0060 .0122 .0021 .0005 -.0005 |
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MgY .06223 .93777 .4485 .017 .0060 .0060 .0122 .0021 .0005 -.0005 |
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LiY .06223 .93777 .4485 .073 .0060 .0060 .0122 .0021 .0005 -.0005 |
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AlZ .26151 .29827 .4623 .982 .0069 .0061 .0056 .0033 -.0005 -.0003 |
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FeZ .26151 .29827 .4623 .018 .0069 .0061 .0056 .0033 -.0005 -.0003 |
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Si .18988 .19193 .0730 .0046 .0047 .0056 .0021 .0003 .0002 |
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B .88981 .11019 .6177 .0088 .0088 .0073 .0038 -.0002 .0002 |
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O1 0 0 .2931 .0432 .0432 .0075 .0216 0 0 |
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O2 .93776 .06224 .5853 .0303 .0303 .0121 .0253 .0001 -.0001 |
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O3 .13427 .86573 .5649 .0104 .0104 .0058 .0002 .0007 -.0007 |
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O4 .90631 .09369 .0058 .0076 .0076 .0085 .0008 -.0005 .0005 |
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O5 .09452 .90548 -.0179 .0074 .0074 .0079 -.0002 -.0009 .0009 |
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O6 .18786 .19831 .2977 .0085 .0076 .0050 .0024 .0006 -.0003 |
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O7 .28601 .28512 -.0066 .0056 .0064 .0078 .0014 .0017 .0004 |
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O8 .27138 .21049 .6319 .0117 .0073 .0093 .0058 -.0030 -.0008 |
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Foitite |
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Francis C A, Dyar M D, Williams M L, Hughes J M |
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The Canadian Mineralogist 37 (1999) 1431-1438 |
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The occurrence and crystal structure of foitite from a tungsten-bearing vein |
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at Copper Mountain, Taos County, New Mexico |
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Note: y-coordinate of H3 changed to x/2. |
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Locality: Copper Mountain, Taos County, New Mexico |
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15.973 15.973 7.137 90 90 120 R3m |
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atom x y z occ Biso |
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Na 0 0 .25 .414 2.25 |
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Ca 0 0 .25 .002 2.25 |
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K 0 0 .25 .002 2.25 |
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FeY .27106 .54212 .31604 .55 .667 |
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AlY .27106 .54212 .31604 .41 .667 |
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MgY .27106 .54212 .31604 .04 .667 |
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AlZ .29835 .26163 .63370 .96 .524 |
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FeZ .29835 .26163 .63370 .01 .524 |
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MgZ .29835 .26163 .63370 .03 .524 |
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Si .19193 .18989 .02340 .486 |
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B .1103 .2206 .4778 .96 .78 |
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H3 .272 .136 .408 1.42 |
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O1 0 0 .8037 .35 2.57 |
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OH1 0 0 .8037 .54 2.57 |
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F1 0 0 .8037 .11 2.57 |
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O2 .06205 .12410 .5116 1.28 |
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O3 .2676 .1338 .5318 1.03 |
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O4 .09349 .18698 .0906 .88 |
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O5 .1883 .09415 .1143 .84 |
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O6 .19808 .18743 .7984 .78 |
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O7 .28509 .28589 .1023 .72 |
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O8 .21005 .27082 .4635 .81 |
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Foitite |
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Kahlenberg V, Velickov B |
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European Journal of Mineralogy 12 (2000) 947-953 |
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Structural investigations on a synthetic alkali-free |
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hydrogen-deficient Fe-tourmaline (foitite) |
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15.964 15.964 7.119 90 90 120 R3m |
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atom x y z occ Uiso |
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FeY .9378 .0622 .5519 .527 .009 |
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AlY .9378 .0622 .5519 .473 .009 |
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AlZ .7385 .7020 .5365 .006 |
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SiT .8104 .8083 .9282 .008 |
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B .1102 .8898 .3817 .008 |
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O1 0 0 .7037 .42 .027 |
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OH1 0 0 .7037 .58 .027 |
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O2 .0619 .9381 .4204 .016 |
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Oh3 .8673 .1327 .4333 .013 |
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O4 .0943 .9057 .9953 .012 |
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O5 .9051 .0949 .0194 .011 |
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O6 .8138 .8027 .7018 .009 |
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O7 .7139 .7146 .0047 .008 |
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O8 .7292 .7901 .3666 .009 |
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H3 .869 .131 .300 .030 |
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| Download AMC data (View Text File)
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View JMOL 3-D Structure
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