mineral

Tumbled lepidolite

Lepidolite, lithium-rich mica: K(Li,Al)₃(Si,Al)₄O₁₀(F,OH)₂

AI-generated identification · may be incorrect

Usually lilac, lavender, pink, or gray-purple with pearly to vitreous luster and prominent micaceous cleavage; Mohs hardness 2.5–3, monoclinic crystal structure, and relatively low specific gravity (~2.8–2.9). The specimen appears tumbled, with pale mica-rich patches and glittery cleavage surfaces.

Identified August 22, 2026More mineral →

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Physical properties

Formation & geological history

Forms mainly in lithium-bearing granite pegmatites during late-stage crystallization, commonly alongside quartz, feldspar, tourmaline, and other lithium minerals. Most specimens formed in relatively young Phanerozoic pegmatites, though age varies by locality.

Uses & applications

Collected as a healing/crystal specimen and occasionally used as a minor lithium source; attractive pieces are used in lapidary objects and ornamental stone, but its softness limits jewelry durability.

Geological facts

Its purple color is commonly associated with manganese, while its sparkly appearance comes from thin mica sheets. It can flake or split along cleavage even after tumbling.

Field identification & locations

Identify it by lavender-purple color, pearly mica sparkle, softness, and easy cleavage; common sources include Brazil, Madagascar, the United States, and Afghanistan. Avoid prolonged soaking, abrasion, and harsh chemicals.