Periclase | |
Chemical Formula |
MgO |
Species |
Oxides & Hydroxides |
Crystal System |
Isometric |
Mohs Scale |
5 |
Specific Gravity |
3.56-3.68 |
Color |
Colorless, grayish white, yellow, brownish yellow, green, black |
Streak |
White |
Luster |
Sub-Vitreous |
Refractive Index |
n = 1.732 |
Diaphaneity |
Transparent, Translucent |
Cleavage |
Perfect perfect; imperfect. |
Fracture |
Irregular/Uneven |
Crystal Habit:Granular, generally occurs as anhedral to subhedral octahedral crystals in matrix | |
Geological Setting:contact metamorphosed limestone or dolomite |