mineral

Lepidolite mica

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

AI-generated identification · may be incorrect

Usually lilac, pink, or lavender with a pearly to vitreous luster and prominent platy cleavage; Mohs hardness 2.5–3, monoclinic mica structure, and specific gravity about 2.8–2.9. The image appears to show a sparkly, foliated aggregate, possibly polished or coated.

Identified September 19, 2026More mineral →

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Physical properties

Formation & geological history

Forms mainly in lithium- and fluorine-rich granite pegmatites during late-stage crystallization, commonly with quartz, tourmaline, feldspar, and spodumene. Most specimens formed in Mesozoic to Cenozoic pegmatitic systems, though ages vary by locality.

Uses & applications

A minor lithium source and popular ornamental and mineral-collecting material; sometimes used in decorative carvings, cabochons, and lapidary pieces, but it is too soft for durable jewelry.

Geological facts

Its characteristic lavender color is commonly caused by manganese. Thin cleavage sheets can glitter strongly and flex slightly, distinguishing it from harder purple quartz.

Field identification & locations

Common localities include Brazil, Madagascar, the United States, Canada, and Russia. Identify it by its pink-lilac color, glittery mica flakes, perfect basal cleavage, and softness; a fingernail can scratch it.