My Mineral | Web Mineral | |
Hardness | 3-4 | 3.5-4 |
Cleavage | 3 perfect | 3 perfect |
Luster | vitreous; silky | vitreous; pearly |
Streak | white | white |
Color | pale rose pink; gray | pale rose pink; gray; brown-white |
Other | No HCl reaction; cannot scratch glass |