Some Common Minerals and Their Properties
|
Name
|
Color
|
Streak
|
Luster
|
Hardness |
Other Properties
|
|
Graphite |
Black |
Black |
Metallic |
1 |
Crystals are rare. |
|
Mica |
Colorless |
White |
Pearly |
2.5-3 |
Flakes into sheets |
| Halite |
Colorless |
White |
Glassy |
2.5 |
Salty taste |
| Galena |
Gray |
Gray |
Metallic |
2.5-3 |
Crystal Cubes |
| Calcite |
Colorless |
White |
Glassy |
3 |
Crystalline |
| Magnetite |
Black |
Black |
Dull |
5.5-6.5 |
Magnetic |
| Pyrite |
Golden |
Black |
Metallic |
6-6.5 |
Looks like gold |
| Feldspar |
Various |
White |
Glassy |
6-6.5 |
Two cleavages |
| Quartz |
Various |
White |
Glassy |
7 |
Round fracture |
| Corundum |
Gray |
White |
Glassy |
9 |
Crystalline |
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