Fernandinite Evans H T, Post J E, Ross D R, Nelen J A The Canadian Mineralogist 32 (1994) 339-351 The crystal structure and crystal chemistry of fernandinite and corvusite Minasragu, Peru, with general formula (Ca,Na,K)x(V,Fe,Ti)8O20.4H2O Locality: Minasragu, Peru _database_code_amcsd 0005363 11.680 3.6537 11.023 90 105.00 90 C2/m atom x y z occ Uiso V1 .8018 0 .1370 .01 V2 .0982 0 .1378 .01 Ca1 .061 0 .506 .46 .02 Ca2 .568 0 .478 .26 .02 O1 .946 0 .096 .01 O2 .849 0 .283 .01 O3 .629 0 .120 .01 O4 .274 0 .100 .01 O5 .110 0 .286 .01