mineral

Lepidolite

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

AI-generated identification · may be incorrect

Hardness: 2.5–3 on Mohs scale; Color: Lilac, pink, or purple (due to manganese); Luster: Vitreous to pearly; Crystal structure: Monoclinic (usually found as micaceous masses); Cleavage: Perfect basal.

Hardness: 2
Color: Lilac, pink, or purple (due to manganese)
Luster: Vitreous to pearly

Identified June 19, 2026More mineral →

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Physical properties

Formation & geological history

Formed primarily in lithium-bearing granite pegmatites. It is a secondary mineral that develops during the final stages of magmatic crystallization when lithium concentrations are high.

Uses & applications

A major source of the element lithium; used in the manufacture of glass, ceramics, and as a component in lithium batteries; also popular as a gemstone for jewelry and ornamental carving.

Geological facts

Lepidolite is often called the 'peace stone' or 'grandmother stone' in metaphysical circles due to its high lithium content, which is used in pharmaceutical mood stabilizers. It is part of the mica group.

Field identification & locations

Identify by its distinctive lilac/purple color and micaceous flake-like structure (though often tumbled smooth). Common in Brazil, Canada, Madagascar, and the USA (California/Maine). Collectors look for deep color and clarity.