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Keystoneite |
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Missen O P, Back M E, Mills S J, Roberts A C, LePage Y, Pinch W W, Mandarino J A |
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The Canadian Mineralogist 59 (2021) 355-364 |
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Crystal chemistry of zemannite-type structures: III. Keystoneite, |
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the Ni2+-analogue of zemannite, and ferrotellurite discredited |
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Locality: Keystone mine, Boulder County, Colorado, USA |
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_database_code_amcsd 0020974 |
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9.3667 9.3667 7.6173 90 90 120 P6_3 |
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atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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Te .45864 .50074 .4281 .0301 .0342 .0344 .0227 .0181 .0033 .0054 |
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NiM1 2/3 1/3 .6121 .90 .0203 .024 .024 .012 .0122 0 0 |
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MgM1 2/3 1/3 .6121 .10 .0203 .024 .024 .012 .0122 0 0 |
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Fe3+M2 2/3 1/3 .2445 .47 .0286 .034 .034 .017 .0171 0 0 |
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NiM2 2/3 1/3 .2445 .32 .0286 .034 .034 .017 .0171 0 0 |
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Mn3+M2 2/3 1/3 .2445 .10 .0286 .034 .034 .017 .0171 0 0 |
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MgM2 2/3 1/3 .2445 .10 .0286 .034 .034 .017 .0171 0 0 |
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O1 .6609 .4990 .425 .029 .033 .035 .020 .017 .012 .014 |
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O2 .143 .488 .609 .041 .047 .056 .027 .031 -.020 .008 |
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O3 .857 .519 -.252 .035 .038 .021 .030 .004 .007 -.017 |
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MgM3 0 0 .502 .59 .036 .027 .027 .056 .013 0 0 |
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NiM3 0 0 .502 .03 .036 .027 .027 .056 .013 0 0 |
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Wat1 .866 .808 .338 .73 .055 |
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Wat2 .860 .802 .177 .54 .041 |
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