Menezesite Atencio D, Coutinho J M V, Doriguetto A C, Mascarenhas Y P, Ellena J, Ferrari V C American Mineralogist 93 (2008) 81-87 Menezesite, the first natural heteropolyniobate, from Cajati, Sao Paulo, Brazil: description and crystal structure Locality: Jacupiranga mine, Cajati county, Sao Paulo, Brazil _database_code_amcsd 0004492 13.017 13.017 13.017 90 90 90 Im3 atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) NbA 0 .1174 .2405 .7683 .036 .0365 .0356 .0371 0 0 -.0016 TaA 0 .1174 .2405 .0300 .036 .0365 .0356 .0371 0 0 -.0016 TiA 0 .1174 .2405 .1917 .036 .0365 .0356 .0371 0 0 -.0016 ZrB .25 .25 .25 .6850 .038 .0383 .0383 .0383 -.0018 -.0018 -.0018 ThB .25 .25 .25 .0775 .038 .0383 .0383 .0383 -.0018 -.0018 -.0018 TiB .25 .25 .25 .2375 .038 .0383 .0383 .0383 -.0018 -.0018 -.0018 FeC 0 .5 0 .0766 .045 .055 .021 .061 0 0 0 MnC 0 .5 0 .0766 .045 .055 .021 .061 0 0 0 MgC 0 .5 0 .3116 .045 .055 .021 .061 0 0 0 BaD 0 0 0 .7399 .032 .0319 .0319 .0319 0 0 0 ThD 0 0 0 .2400 .032 .0319 .0319 .0319 0 0 0 BaE .391 .256 0 .1225 .128 .060 .28 .045 .025 0 0 CaE .391 .256 0 .0258 .128 .060 .28 .045 .025 0 0 KE .391 .256 0 .0442 .128 .060 .28 .045 .025 0 0 O1 .2076 .3899 .3091 .030 .034 .030 .027 .000 -.004 .001 O2 .3402 0 0 .037 .030 .036 .045 0 0 0 O3 .1009 0 .1711 .027 .022 .024 .037 0 .001 0 Wat41 .3824 .3771 0 .5 .033 Wat42 .3581 .4175 0 .5 .027