Conchoidal, Brittle, Metallic, Conchoidal, Handbook of mineralogy (2001)
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)