mineral

Lepidolite

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

Hardness: 2.5-3.5 on the Mohs scale. Color: Pink, lilac, purplish-gray. Luster: Vitreous to pearly. Crystal Structure: Monoclinic, often appearing as massive or scaly aggregates. Cleavage: Perfect basal. Specific Gravity: 2.8-2.9.

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

Identified May 12, 2026More mineral →

Explore Lepidolite in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Formed primarily in lithium-bearing pegmatites. It is a secondary mineral usually associated with tourmaline, amblygonite, and spodumene. It forms through late-stage magmatic processes rich in volatiles.

Uses & applications

A major source of lithium, used in rechargeable batteries, glass-making, and ceramics. In the metaphysical and jewelry markets, it is used for beads, cabochons, and decorative carvings.

Geological facts

Lepidolite is sometimes referred to as the 'peace stone' or 'grandmother stone' in folklore due to its lithium content, which is used in mood-stabilizing medications. It was first described in the 18th century by Martin Klaproth.

Field identification & locations

Identified in the field by its distinct lilac to purplish color and soft, micaceous (flakey) structure. Primarily found in Brazil, Canada, Madagascar, and the United States (California/Maine). Look for its characteristic pearly luster.