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Roumaite |
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Biagioni C, Bonaccorsi E, Merlino S, Parodi G C, Perchiazzi N, |
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Chevrier V, Bersani D |
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The Canadian Mineralogist 48 (2010) 17-28 |
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Roumaite, (Ca,Na)3(Ca,REE,Na)4(Nb,Ti)[Si2O7]2(OH)F3, from Rouma Island, |
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Los Archipelago, Guinea: A new mineral species related to dovyrenite |
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Locality: Rouma Island, Los Archipelago, Guinea |
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_database_code_amcsd 0006312 |
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7.473 11.294 18.778 90 101.60 90 Cc |
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atom x y z occ Uiso |
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CaM2 .7429 .8755 .4796 .46 .0189 |
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NaM2 .7429 .8755 .4796 .30 .0189 |
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CaM3 .9903 .8751 .9799 .60 .0279 |
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NaM3 .9903 .8751 .9799 .15 .0279 |
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NaM4 .9896 .3753 .9803 .60 .0276 |
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CaM4 .9896 .3753 .9803 .35 .0276 |
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CeM5 .6436 .7056 .2894 .60 .0084 |
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NaM5 .6436 .7056 .2894 .40 .0084 |
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CaM6 .3355 .4524 .1683 .65 .0046 |
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CeM6 .3355 .4524 .1683 .175 .0046 |
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NaM6 .3355 .4524 .1683 .175 .0046 |
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CaM7 .6390 .7938 .7862 .68 .0086 |
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CeM7 .6390 .7938 .7862 .17 .0086 |
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NaM7 .6390 .7938 .7862 .17 .0086 |
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CaM8 .3338 .9550 .1708 .45 .0046 |
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CeM8 .3338 .9550 .1708 .275 .0046 |
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NaM8 .3338 .9550 .1708 .275 .0046 |
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NbM1 .7354 .6274 .9769 .55 .0258 |
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TiM1 .7354 .6274 .9769 .45 .0258 |
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Si1 .0832 .6998 .1176 .0168 |
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Si2 .5215 .7005 .1184 .0075 |
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Si3 .8807 .9544 .3398 .0095 |
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Si4 .4477 .9530 .3400 .0147 |
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O1 .3946 .6559 .7917 .0223 |
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O2 .3930 .0751 .3004 .0159 |
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O3 .6765 .9457 .3610 .0189 |
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O4 .5184 .5526 .9189 .0180 |
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O5 .0910 .5879 .1700 .0004 |
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O6 .3849 .8425 .2924 .0200 |
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O7 .3983 .5767 .3017 .0129 |
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O8 .2962 .7023 .0966 .0208 |
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O9 .5932 .8167 .1680 .0022 |
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O10 .3917 .9498 .4199 .0224 |
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O11 .0883 .8165 .1659 .0042 |
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O12 .9555 .6962 .0384 .0068 |
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O13 .5778 .6972 .0400 .0086 |
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O14 .5960 .5898 .1718 .0014 |
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F1 .7657 .4775 .0397 .75 .0176 |
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OH1 .7657 .4775 .0397 .25 .0176 |
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F2 .7031 .7061 .4160 .75 .0154 |
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OH2 .7031 .7061 .4160 .25 .0154 |
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F3 .7018 .7689 .9140 .75 .0164 |
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OH3 .7018 .7689 .9140 .25 .0164 |
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F4 .2697 .4544 .0397 .75 .0148 |
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OH4 .2697 .4544 .0397 .25 .0148 |
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View JMOL 3-D Structure (permalink) |
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