Uneven, Conchoidal, UnevenArthur Thomas, Brittle
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SbTaO 4Ulrich Henn and Claudio C.