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