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  Home  >>  Mineral Encyclopedia  >>  Mineral Photos  >>  Trilithionite-Trilithionite
Trilithionite
Chemical
Formula
 KLi2Al(Al,Si)3O10(F,OH)2
Species
 Silicates
Crystal
System
 Monoclinic
Mohs
Scale
 2.5-3
Specific
Gravity
 2.8-2.9
Color
 Pink, purple, rose-red, Purple-gray, yellowish, white, colorless
Streak
 White
Luster
 Vitreous to pearly
Refractive
Index
 nα=1.525–1.548, nβ=1.551–1.58, nγ=1.554–1.586
Diaphaneity
 Transparent to translucent
Cleavage
 perfect
Fracture
 Uneven
Crystal Habit：Tabular to prismatic pseudohexagonal crystals, scaly aggregates and massive
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