Lepidolite
Lepidolite · Mineral Specimen and Collector Stone
Crystal System
Monoclinic, typically forming flaky, micaceous masses or tabular pseudohexagonal crystals
Mineral Group
Silicates, specifically the mica group (phyllosilicates)
Chemical Formula
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Formation Process
Pegmatitic and hydrothermal formation processes, crystallizing from volatile-rich residual granitic magmas at relatively low temperatures
About This Crystal
The specimen is a pale lilac-to-pinkish purple micaceous fragment with visible layered sheets, pearly to vitreous luster, and a translucent to opaque appearance showing lamellar structure
Physical Characteristics
Color is lilac, pink, or grayish-white; streak is white; perfect basal cleavage in one direction yielding thin, flexible sheets; specific gravity is around 2.8 to 2.9; tenacity is sectile and elastic in thin sheets
Optical Properties
Biaxial negative with double refraction, refractive index ranges from 1.530 to 1.600, showing weak pleochroism in shades of pink
Hardness & Durability
Origin Region
Found globally including Brazil, Madagascar, USA (California), Russia, and Czech Republic; forms mainly in lithium-rich granitic pegmatites
Hardness & Durability
Mohs hardness of 2.5 to 3, very low durability for jewelry due to perfect cleavage and softness, easily scratched by a copper coin
Care & Maintenance
Store separately to avoid scratching, clean gently with a soft dry cloth or lukewarm water, avoid harsh chemicals, ultrasonic cleaners, and prolonged direct sunlight to prevent fading
Rarity & Value
Common to uncommon as a mineral specimen, valued mainly as an ore of lithium and for crystal collections, affordable price range
Special Characteristics
High lithium content, micaceous platy cleavage habit, and natural source of trace rubidium and cesium
Lore & History
Often associated with emotional healing, stress relief, and tranquility in modern crystal healing traditions, though these are strictly metaphysical beliefs and not scientifically validated