Humite | |
Chemical Formula |
(Mg,Fe)7(SiO4)3(F,OH)2. |
Species |
Silicates |
Crystal System |
Orthorhombic |
Mohs Scale |
6 |
Specific Gravity |
3.20-3.32 |
Color |
White, yellow, dark orange, brown |
Streak |
White |
Luster |
Vitreous |
Refractive Index |
n = 1.607 - 1.643 n = 1.619 - 1.653 n = 1.639 - 1.675 |
Diaphaneity |
Transparent |
Cleavage |
Poor |
Fracture |
Uneven to subconchoidal |