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Oftedalite |
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Cooper M A, Hawthorne F C, Ball N A, Cerny P, Kristiansen R |
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The Canadian Mineralogist 44 (2006) 943-949 |
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Oftedalite, (Sc,Ca,Mn2+)2 K (Be,Al)3 Si12 O30, a new member of the milarite |
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group from the Heftetjern pegmatite, Tordal, Norway: description and crystal |
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structure |
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Locality: Heftetjern pegmatite, Tordal, Norway |
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_database_code_amcsd 0006096 |
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10.097 10.097 13.991 90 90 120 P6/mcc |
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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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KC 0 0 .25 .0204 .0175 .0175 .026 .0087 0 0 |
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ScA 1/3 2/3 .25 .42 .0090 .0070 .0070 .0131 .0035 0 0 |
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CaA 1/3 2/3 .25 .515 .0090 .0070 .0070 .0131 .0035 0 0 |
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MnA 1/3 2/3 .25 .045 .0090 .0070 .0070 .0131 .0035 0 0 |
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YA 1/3 2/3 .25 .005 .0090 .0070 .0070 .0131 .0035 0 0 |
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Fe2+A 1/3 2/3 .25 .015 .0090 .0070 .0070 .0131 .0035 0 0 |
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BeT2 0 .5 .25 .953 .009 .010 .009 .008 .005 0 0 |
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AlT2 0 .5 .25 .047 .009 .010 .009 .008 .005 0 0 |
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SiT1 .0884 .3466 .10937 .0076 .0058 .0057 .0110 .0027 -.0011 -.0024 |
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O1 .1044 .4005 0 .014 .021 .017 .005 .011 0 0 |
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O2 .2030 .2818 .1300 .022 .023 .028 .028 .023 -.003 -.002 |
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O3 .1216 .4817 .1816 .016 .023 .013 .015 .012 -.001 -.004 |
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View JMOL 3-D Structure (permalink) |
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