Cleavage: | [110] Good |
Color: | Green, White, Pale bluish gray, Grayish green, Pale purple. |
Density: | 3.25 - 3.35, Average = 3.3 |
Diaphaniety: | Translucent to subtranslucent |
Fracture: | Tough - Difficult to break apart as shown by fibrous minerals and most metals. |
Habit: | Fibrous - Crystals made up of fibers. |
Habit: | Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
Habit: | Massive - Fibrous - Distinctly fibrous fine-grained forms. |
Hardness: | 6.5 - Pyrite |
Luminescence: | Non-fluorescent. |
Luster: | Vitreous (Glassy) |
Streak: | white |