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Manganlotharmeyerite |
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Brugger J, Krivovichev S V, Kolitsch U, Meisser N, Andrut M, Ansermet S, Burns P C |
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The Canadian Mineralogist 40 (2002) 1597-1608 |
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Description and crystal structure of manganlotharmeyerite, |
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Ca(Mn,_,Mg)2{AsO4,[AsO2(OH)2]}2(OH,H2O)2, from the Starlera Mn-deposit, |
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Swiss Alps, and a redefinition of lotharmeyerite |
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Locality: Starlera Mn-deposit, Swiss Alps |
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9.043 6.2314 7.3889 90 116.392 90 C2/m |
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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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Ca1 0 0 0 .0144 .0166 .0150 .0105 0 .0051 0 |
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Mn2 .25 .25 .5 .59 .0099 .0096 .0101 .0080 .0000 .0021 .0002 |
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Mg2 .25 .25 .5 .17 .0099 .0096 .0101 .0080 .0000 .0021 .0002 |
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As .91498 .5 .20524 .0102 .0089 .0112 .0089 0 .0026 0 |
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OH1 .3385 .5 .4098 .59 .0195 .015 .022 .019 0 .006 0 |
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Wat1 .3385 .5 .4098 .41 .0195 .015 .022 .019 0 .006 0 |
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O2 .3170 0 .3573 .0190 .019 .019 .022 0 .012 0 |
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O3 .0351 .2793 .2468 .0186 .0168 .0164 .020 .0008 .0061 -.0010 |
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O4 .2420 .5000 .0237 .0222 .017 .031 .013 0 .002 0 |
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