mineral

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Hardness: 2.5-3.5 on Mohs scale. Color: Pink, purplish-gray, lavender. Luster: Vitreous to pearly. Crystal structure: Monoclinic (micaceous). Cleavage: Perfect basal. Specific gravity: 2.8-2.9.

Hardness: 2
Color: Pink, purplish-gray, lavender
Luster: Vitreous to pearly

Identified July 5, 2026More mineral →

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Physical properties

Hardness: 2.5-3.5 on Mohs scale. Color: Pink, purplish-gray, lavender. Luster: Vitreous to pearly. Crystal structure: Monoclinic (micaceous). Cleavage: Perfect basal. Specific gravity: 2.8-2.9.

Formation & geological history

Formed in granitic pegmatites during late-stage crystallization where lithium was concentrated. Often found associated with other lithium minerals like spodumene or tourmaline.

Uses & applications

Major source of lithium; used in the manufacturing of glass and ceramics to increase strength and durability. Also popular in jewelry, carvings, and as therapeutic 'worry stones' due to its calming aesthetics.

Geological facts

Lepidolite is known as the 'peace stone' or 'grandmother stone' in metaphysical circles because of its high lithium content, which is used medically to treat mood disorders. It was originally named 'lilalite' before being renamed after the Greek word 'lepidos' for scale.

Field identification & locations

Identifiable by its distinct purple to lilac color and micaceous (shimmery, flaky) structure. Look for it in high-grade pegmatite zones. Common locations include Brazil, Russia, Canada (Manitoba), and the USA (Maine, California).