Brown, Yellow, White, Brown, Greenish, Yellow, White
Colorless, Yellow, Brown, Green, Colorless, Green, Yellow, Red, Reddish, Brown
Uneven, Even, Yellow, White
Brittle, Metallic, Brittle, Metallic
K(Mg,Fe++)3[AlSi3O10(OH,F)2
Ca(Mg,Al)3(Al3Si)O10(OH)2