mineral

Polished lepidolite-rich mica

Lepidolite, K(Li,Al)3(Si,Al)4O10(F,OH)2; possibly a lepidolite-bearing pegmatite

AI-generated identification · may be incorrect

Pale lavender to lilac, pearly-vitreous luster, and a platy mica crystal structure with perfect basal cleavage; Mohs hardness 2.5–3 and specific gravity about 2.8–3.0. The flat, polished piece appears massive and fine-grained rather than showing distinct crystal books.

Identified September 19, 2026More mineral →

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Physical properties

Formation & geological history

Forms in late-stage lithium-rich granite pegmatites through hydrothermal crystallization, commonly with quartz, feldspar, tourmaline, and spodumene. Most specimens are Paleozoic to Mesozoic or younger pegmatite material, depending on locality.

Uses & applications

Used primarily as a decorative and lapidary stone, cabochon material, and mineral specimen; historically an important lithium-bearing ore, though modern extraction generally favors other lithium minerals.

Geological facts

Its lavender color commonly comes from manganese and trace elements. Lepidolite can leave flaky cleavage surfaces and may show subtle mica sparkle when rotated under light.

Field identification & locations

Identify by lavender color, pearly sheen, softness, and perfect sheet-like cleavage; common localities include Brazil, Madagascar, Zimbabwe, and California. A polished common-quality piece is typically worth $5–$25 USD; vivid, well-patterned specimens may reach $30–$100.