Reddish, Brown, Yellow, Green, Red, Greenish, gray
Blue, Red, Yellow, Colorless, Blue, Colorless, Green, Yellow, White, Blue, Colorless, Green, Yellow, White
Conchoidal, Uneven, Brittle
Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Imperfect on {001}, indistinct on {011}
Poor/indistinct on {1120} and {1011}