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Nchwaningite |
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Nyfeler D, Armbruster T, Dixon R, Bermanec V |
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American Mineralogist 80 (1995) 377-386 |
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Nchwaningite, Mn2SiO3(OH)2.H2O, a new pyroxene-related chain silicate from the |
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N'chwaning mine, Kalahari manganese field, South Africa |
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_database_code_amcsd 0001731 |
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12.672 7.217 5.341 90 90 90 Pca2_1 |
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atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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Mn1 .18811 .82325 0 .0111 .0113 .077 .0002 .0003 .0010 |
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Mn2 .95789 .16870 -.0220 .0108 .0118 .0084 .0014 -.0005 -.0001 |
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Si .81410 -.2139 .1877 .0089 .0078 .0078 .0003 .0001 -.0002 |
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O1 .8171 .0097 .1733 .0131 .0079 .0090 .0005 -.0004 -.0004 |
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Oh2 .9258 -.0159 -.3282 .0117 .0119 .0123 .0003 -.0006 .0011 |
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Oh3 .6787 .3178 .3443 .0159 .008 .0127 -.0019 .0006 -.0005 |
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Oh4 .9459 .3418 .3336 .0171 .0130 .013 .0006 -.0036 -.0008 |
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O5 .9273 -.3084 .2310 .0104 .0116 .0132 .0013 -.0009 .0003 |
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O6 .7677 -.2847 -.0889 .0153 .0106 .0080 .0013 -.0021 -.0016 |
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H2 .881 -.109 .75 .02 |
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H3 .681 .452 .355 .02 |
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H4 .936 .472 .296 .02 |
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H41 .996 .338 .47 .02 |
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Tweddillite |
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Armbruster T, Gnos E, Dixon R, Gutzmer J, Hejny C, Dobelin N, Medenbach O |
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Mineralogical Magazine 66 (2002) 137-150 |
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Manganvesuvianite and tweddillite, two new Mn3+-silicate minerals |
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from the Kalahari manganese fields, South Africa |
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Locality: Kalahari manganese fields, South Africa |
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_database_code_amcsd 0014561 |
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8.934 5.718 10.325 90 114.54 90 P2_1/m |
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atom x y z occ Biso |
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CaA1 .7646 .75 .1575 .92 |
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SrA2 .5941 .75 .42163 1.03 |
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AlM1 0 0 0 .43 .64 |
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Mn3+M1 0 0 0 .48 .64 |
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Fe3+M1 0 0 0 .09 .64 |
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AlM2 0 0 .5 .66 |
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Mn3+M3 .2954 .25 .2181 5/6 .90 |
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Fe3+M3 .2954 .25 .2181 1/6 .90 |
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Si1 .3417 .75 .0411 .95 |
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Si2 .6877 .25 .2787 .85 |
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Si3 .1803 .75 .3150 .86 |
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O1 .2389 .9915 .0386 1.42 |
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O2 .2984 .9786 .3480 1.14 |
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O3 .7967 .0160 .3433 1.17 |
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O4 .0600 .25 .1312 .9 |
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O5 .0369 .75 .1479 1.0 |
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O6 .0661 .75 .4061 1.0 |
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O7 .5174 .75 .1691 1.4 |
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O8 .5277 .25 .3110 1.0 |
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O9 .6323 .25 .1063 1.8 |
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O10 .0815 .25 .4293 .9 |
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H10 .06 .25 .339 3.95 |
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Manganvesuvianite |
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Armbruster T, Gnos E, Dixon R, Gutzmer J, Hejny C, Dobelin N, Medenbach O |
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Mineralogical Magazine 66 (2002) 137-150 |
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Manganvesuvianite and tweddillite, two new Mn3+-silicate minerals |
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from the Kalahari manganese fields, South Africa |
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Locality: Kalahari manganese fields, South Africa |
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_database_code_amcsd 0014562 |
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15.575 15.575 11.824 90 90 90 *P4/n |
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.25 -.25 0 |
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atom x y z occ Biso |
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CaX1 -.25 .25 .2504 .81 |
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CaX2A .18951 -.04395 .62112 .84 |
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CaX2B -.04570 .18816 -.12041 .81 |
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CaX3A .09891 .17897 .11669 1.35 |
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CaX3B -.39895 -.18214 -.39052 1.27 |
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MnY2A 0 0 0 .10 .69 |
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AlY2A 0 0 0 .90 .69 |
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MnY2B -.5 0 .5 .05 .69 |
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AlY2B -.5 0 .5 .95 .69 |
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MnY3A -.11226 .11962 .12497 .19 .73 |
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AlY3A -.11226 .11962 .12497 .81 .73 |
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MnY3B -.38839 .12156 .37384 .16 .74 |
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AlY3B -.38839 .12156 .37384 .84 .74 |
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CaX4B .25 .25 -.1469 .324 1.1 |
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MnY1B .25 .25 .5428 .324 .92 |
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CaX4A .25 .25 .6475 .676 .95 |
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MnY1A .25 .25 -.0454 .676 .81 |
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SiZ1A -.25 .25 0 .734 |
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SiZ1B -.25 .25 .5 .734 |
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SiZ2A -.04035 .31890 .1292 .734 |
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SiZ2B -.04115 .18017 .3719 .734 |
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SiZ3A .08686 .34911 -.1352 .734 |
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SiZ3B .08199 .15100 .6357 .734 |
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O1A -.2212 .1725 .0858 .86 |
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O1B -.2808 .1724 .4148 .84 |
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O2A -.1174 .3385 .2212 .98 |
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O2B -.1177 .1588 .2803 .90 |
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O3A -.0470 .2219 .0751 .94 |
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O3B -.0478 .2767 .4253 .80 |
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O4A -.0614 .3934 .0321 1.01 |
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O4B -.0620 .1059 .4711 .88 |
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O5A -.0104 .3272 -.1771 1.16 |
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O5B -.0150 .1701 .6797 1.08 |
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O6A .1256 .2728 -.0572 1.37 |
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O6B .1181 .2285 .5598 1.34 |
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O7A .0561 .3262 .1805 1.24 |
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O7B .0554 .1722 .3232 1.06 |
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O8A .0928 .4386 -.0660 .84 |
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O8B .0909 .0610 .5678 .95 |
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O9 .1479 .3562 -.2496 1.09 |
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O10A .25 .25 .1344 1.34 |
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O10B -.25 -.25 -.3648 1.27 |
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OH11A -.0048 .0600 .1367 .95 |
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OH11B -.4960 .0626 .3645 1.02 |
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| Download AMC data (View Text File)
Download CIF data (View Text File)
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View JMOL 3-D Structure
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