Alabandite | |
Chemical Formula |
MnS |
Species |
Sulfides |
Crystal System |
Isometric |
Mohs Scale |
3-4 |
Specific Gravity |
4.053 |
Color |
black, steelgray, brownish-black |
Streak |
Green |
Luster |
Sub-Metallic |
Refractive Index |
n = 2.70 |
Diaphaneity |
Opaque |
Cleavage |
Perfecton |
Fracture |
Irregular/Uneven |
Crystal Habit:mostly massive or granular; cubic or octahedral crystals to 1 cm | |
Geological Setting:May occur in large quantities in epithermal polymetallic sulfide veins and especially in low-temperature manganese deposits. An uncommon constituent of a number of meteorites. |