Colorless, Yellow, Brown, Green, Colorless, Green, Yellow, Red, Reddish, Brown
Blue, White, Grey, Yellow, Green, Colorless, Red, gray
Brittle, Metallic, Brittle, Metallic
Uneven, Conchoidal, Brittle
Ca(Mg,Al)3(Al3Si)O10(OH)2
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2