dbes BETAFITE, (Ca,Na,U)2(Ti,Nb,Ta)2O6(OH), Silver Carter Mine, Bancroft, Ontario, Canada, 7.5 x 6 x 3.5 cm | |
Radioactive Uranium mineral from Canada. Well formed brown 1 cm Betafite crystal in matrix. It is a black mineral with the formula (Ca,Na,U)2(Ti,Nb,Ta)2O6(OH) |