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.