Black, Green, Black, Green, Black, Green, gray, Black, Green, gray
Colorless, Yellow, Brown, Green, Colorless, Green, Yellow, Red, Reddish, Brown
Not Available, Not Available, gray, Green
White, Yellow, Colorless
Uneven, Brittle, Metallic, Brittle, Metallic
Brittle, Metallic, Brittle, Metallic
NaNa2(Fe++4Fe+++)Si8O22(OH)2
Ca(Mg,Al)3(Al3Si)O10(OH)2