Fluorcalciomicrolite Andrade M B, Atencio D, Persiano A I C, Ellena J Mineralogical Magazine 77 (2013) 2989-2996 Fluorcalciomicrolite, (Ca,Na,_)2Ta2O6F, a new microlite-group mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil Locality: Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil _database_code_amcsd 0019993 10.4191 10.4191 10.4191 90 90 90 *Fd-3m .125 .125 .125 atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) CaA 0 0 .5 .53 .0130 .0130 .0130 .0130 -.0041 -.0041 -.0041 NaA 0 0 .5 .41 .0130 .0130 .0130 .0130 -.0041 -.0041 -.0041 TaB 0 0 0 .895 .00438 .00438 .00438 .00438 -.00062 -.00062 -.00062 NbB 0 0 0 .105 .00438 .00438 .00438 .00438 -.00062 -.00062 -.00062 OX .125 .125 .3183 .99 .0087 .0082 .0082 .0097 .0051 0 0 OHX .125 .125 .3183 .01 .0087 .0082 .0082 .0097 .0051 0 0 FY .125 .125 .625 .79 .0121 .0121 .0121 .0121 0 0 0 OHY .125 .125 .625 .21 .0121 .0121 .0121 .0121 0 0 0