| Sample # |
23 |
| Mineral
Name |
GYPSUM |
| Chemical Composition |
CaSO4.2H2O |
| Luster |
Vitreous
to pearly |
| Color(s) |
Colorless
to white or light grey. Maybe colored brownish-orange by impurities |
| Streak Color |
White |
| Specifc Gravity |
2.3 |
| Habit |
Tabular, fibrous, massive |
| Cleavage/Fracture |
One perfect, 2 poor |
| Hardness |
2 |
| Diagnostic Feature(s) | Hardness, cleavage, habit |
