Blue, Red, Yellow, Colorless, Blue, Colorless, Green, Yellow, White, Blue, Colorless, Green, Yellow, White
Brown, Green, Brownish, Yellow, Greenish, White, Brown, Black
Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Fibrous
Poor/indistinct on {1120} and {1011}
[010] Perfect, [100] Distinct, [011] Distinct