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Kanoite |
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Gordon W A, Peacor D R, Brown P E, Essene E J, Allard L F |
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American Mineralogist 66 (1981) 127-141 |
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Exsolution relationship in a clinopyroxene of average composition |
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Ca0.43Mn0.69Mg0.82Si2O6: X-ray diffraction and analytical electron microscopy |
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9.78 8.93 5.32 90 108.6 90 P2_1/c |
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atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Mg1 .2505 .6544 .2357 .90 0.0013 0.0017 0.0072 0.0001 0.0002 0.0004 |
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Mn1 .2505 .6544 .2357 .10 0.0013 0.0017 0.0072 0.0001 0.0002 0.0004 |
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Mn2 .2534 .0235 .2332 .86 0.0023 0.0031 0.0105 0.0003 0.0006 0.0004 |
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Mg2 .2534 .0235 .2332 .14 0.0023 0.0031 0.0105 0.0003 0.0006 0.0004 |
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Si1a .0413 .3411 .2710 0.0017 0.0019 0.0096 -.0002 0.0011 -.0006 |
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Si1b .5466 .8388 .2408 0.0016 0.0021 0.0096 -.0001 0.0011 -.0006 |
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O1a .8674 .3383 .1652 0.0019 0.0023 0.0138 0.0002 0.0016 0.0009 |
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O1b .3726 .8382 .1367 0.0025 0.0022 0.0116 0.0001 0.0019 0.0010 |
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O2a .1181 .5009 .3255 0.0031 0.0026 0.0124 -.0008 0.0016 -.0012 |
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O2b .6239 .9916 .3589 0.0019 0.0038 0.0145 -.0004 0.0009 -.0017 |
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O3a .1034 .2590 .5707 0.0021 0.0041 0.0130 -.0007 0.0012 0.0017 |
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O3b .6038 .7161 .4901 0.0023 0.0044 0.0112 0.0004 0.0005 0.0034 |
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Kanoite |
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Arlt T, Angel R J, Miletich R, Armbruster T, Peters T |
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American Mineralogist 83 (1998) 1176-1181 |
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High-pressure P2_1/c-C2/c phase transitions in clinopyroxenes: |
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Influence of cation size and electronic structure |
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Sample at P = 0.0 GPa |
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9.7196 8.9172 5.2465 90 108.74 90 P2_1/c |
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atom x y z occ Biso |
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Mg1 .25065 .6537 .2279 .900 .58 |
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Mn1 .25065 .6537 .2279 .100 .58 |
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Mn2 .25487 .02031 .2269 .744 .82 |
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Mg2 .25487 .02031 .2269 .256 .82 |
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SiA .04220 .34061 .2806 .63 |
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SiB .54959 .83774 .2358 .64 |
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O1A .8671 .3378 .1725 .77 |
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O1B .3741 .8382 .1312 .82 |
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O2A .1188 .5006 .3237 .91 |
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O2B .6281 .9881 .3715 .96 |
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O3A .1042 .2677 .5875 .89 |
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O3B .6047 .7066 .4751 .88 |
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Kanoite |
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Arlt T, Angel R J, Miletich R, Armbruster T, Peters T |
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American Mineralogist 83 (1998) 1176-1181 |
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High-pressure P2_1/c-C2/c phase transitions in clinopyroxenes: |
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Influence of cation size and electronic structure |
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Sample at P = 5.2 GPa |
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9.4199 8.7830 5.0201 90 103.050 90 C2/c |
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atom x y z occ Biso |
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Mg1 0 .9064 .25 .836 1.09 |
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Mn1 0 .9064 .25 .164 1.09 |
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Mn2 0 .2812 .25 .264 .85 |
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Mg2 0 .2812 .25 .736 .85 |
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Si .2945 .0910 .2187 .87 |
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O1 .1225 .0881 .1409 1.01 |
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O2 .3758 .2427 .3615 .97 |
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O3 .3488 .0514 .9339 1.15 |
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Kanoite |
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Gnos E, Armbruster T, Nyfeler D |
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European Journal of Mineralogy 8 (1996) 251-261 |
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Kanoite, donpeacorite and tirodite: Mn-Mg-silicates from a |
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manganiferous quartzite in the United Arab Emirates |
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Sample: pyroxene |
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Locality: manganiferous quartzite in the United Arab Emirates |
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9.725 8.876 5.263 90 108.53 90 P2_1/c |
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atom x y z occ Uiso |
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MgM1 .25052 .6543 .2339 .976 .0047 |
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MnM1 .25052 .6543 .2339 .024 .0047 |
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CaM2 .25369 .02375 .23236 .07 .0093 |
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MnM2 .25369 .02375 .23236 .775 .0093 |
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MgM2 .25369 .02375 .23236 .155 .0093 |
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SiA .04156 .34113 .2711 .0068 |
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SiB .54704 .83886 .2389 .0071 |
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O1A .8666 .33715 .1652 .0087 |
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O1B .3720 .8377 .1340 .0089 |
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O2A .1179 .5020 .3232 .0104 |
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O2B .6242 .9938 .3591 .0122 |
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O3A .1039 .2608 .5708 .0111 |
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O3B .6048 .7158 .4900 .0110 |
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Kanoite |
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Arlt T, Armbruster T |
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European Journal of Mineralogy 9 (1997) 953-964 |
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The temperature-dependent P2_1/c - C2/c phase transition in the |
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clinopyroxene kanoite MnMg[Si2O6]: a single-crystal X-ray and optical study |
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T = 200 C |
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9.758 8.897 5.283 90 108.74 90 P2_1/c |
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atom x y z occ Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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MgM1 .2506 .6539 .2367 .969 .48 .0063 .0064 .0057 .001 .0019 .0006 |
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MnM1 .2506 .6539 .2367 .031 .48 .0063 .0064 .0057 .001 .0019 .0006 |
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CaM2 .2531 .02387 .2353 .07 .95 .0128 .0126 .0093 .0017 .0014 .0010 |
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MnM2 .2531 .02387 .2353 .790 .95 .0128 .0126 .0093 .0017 .0014 .0010 |
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MgM2 .2531 .02387 .2353 .140 .95 .0128 .0126 .0093 .0017 .0014 .0010 |
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SiA .0420 .3410 .2693 .56 .0059 .0073 .0080 -.0005 .0023 -.0007 |
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SiB .5462 .8391 .2426 .58 .0070 .0078 .0079 -.0012 .0031 -.0009 |
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O1A .8670 .3376 .1629 .69 .006 .012 .009 .000 .003 .000 |
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O1B .3712 .8377 .1370 .72 .005 .011 .010 -.001 .002 .000 |
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O2A .1182 .5021 .3265 .89 .012 .008 .014 -.004 .005 -.002 |
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O2B .6239 .9942 .3571 1.13 .015 .013 .015 .004 .004 .010 |
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O3A .1043 .2586 .5661 .99 .007 .015 .015 .004 .004 .010 |
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O3B .6046 .7199 .4984 1.03 .011 .018 .012 .000 .006 .006 |
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Kanoite |
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Arlt T, Armbruster T |
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European Journal of Mineralogy 9 (1997) 953-964 |
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The temperature-dependent P2_1/c - C2/c phase transition in the |
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clinopyroxene kanoite MnMg[Si2O6]: a single-crystal X-ray and optical study |
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T = 270 C |
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9.796 8.880 5.315 90 109.26 90 C2/c |
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atom x y z occ Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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MgM1 0 .9041 1/4 .979 .65 .0084 .0075 .0078 0 .0017 0 |
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MnM1 0 .9041 1/4 .021 .65 .0084 .0075 .0078 0 .0017 0 |
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CaM2 0 .2740 1/4 .07 1.20 .0169 .0144 .0118 0 .0013 0 |
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MnM2 0 .2740 1/4 .786 1.20 .0169 .0144 .0118 0 .0013 0 |
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MgM2 0 .2740 1/4 .144 1.20 .0169 .0144 .0118 0 .0013 0 |
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Si .2935 .0905 .2592 .71 .0080 .0088 .0099 -.0010 .0028 -.0008 |
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O1 .1190 .0882 .1510 .92 .0077 .013 .014 -.0001 .0031 -.0010 |
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O2 .3699 .2502 .3402 1.29 .017 .012 .020 -.0047 .0068 -.0031 |
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O3 .3538 .0060 .0420 1.64 .011 .030 .020 .0003 .0031 -.015 |
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