Lepidolite | |
Chemical Formula |
KLi2Al(Al,Si)3O10(F,OH)2 |
Species |
Silicates |
Crystal System |
Monoclinic |
Mohs Scale |
2-3 |
Specific Gravity |
3.11 |
Color |
Pink, purple, rose-red, Purple-gray, yellowish, white, colorless |
Streak |
White |
Luster |
Sub-Vitreous, Resinous, Greasy, Pearly |
Refractive Index |
nα=1.525–1.548, nβ=1.551–1.58, nγ=1.554–1.586 |
Diaphaneity |
Transparent, Translucent |
Cleavage |
Perfect perfect |
Fracture |
Micaceous |
Crystal Habit:Tabular to prismatic pseudohexagonal crystals, scaly aggregates and massive | |
Geological Setting:May be found in aplites associated with granite pegmatite. rarely found in hydrothermal veins and extremely rarely in granite contact zones. |