Formula: KLi₂AlSi₄O₁₀F(OH)

Species: Silicates – (Phyllosilicates)

Series Formula: Kli₂Al(Si₄O₁₀)(F,OH)₂  to K(Li_1.5Al_1.5)(AlSi₃O₁₀)(F,OH)₂

Colour: Pink, light purple, light rose red, other colors possible but are rare.

Lustre: Sub-Vitreous, Resinous, Greasy, Pearly

Hardness: 2½ – 3½

Specific Gravity: 2.8 – 2.9

Crystal System: Monoclinic

Member of: Trioctahedral mica Group > Mica Group, A series between Polylithionite and Trilithionite

Name: Named in 1792 by Martin Klaproth from the Greek words lepidos for “scale” and lithos for “stone”.