Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
(Ca,Mn2+ ,Fe2+ ) 3Al 2BSi 4O 15(OH)Anthony et al , Handbook of mineralogy (2001)
(Ca,Ce)(Al,Ti,Mg)12O19