mineral

Lepidolite

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

Hardness: 2.5–3.5 (Mohs scale); Color: Lilac, pink, rose-red, or gray; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Perfect basal (micaceous); Specific gravity: 2.8–2.9

Hardness: 2
Color: Lilac, pink, rose-red, or gray
Luster: Vitreous to pearly

Identified March 28, 2026More mineral →

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Physical properties

Hardness: 2.5–3.5 (Mohs scale); Color: Lilac, pink, rose-red, or gray; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Perfect basal (micaceous); Specific gravity: 2.8–2.9

Formation & geological history

Formed in lithium-bearing granitic pegmatites; often associated with other lithium minerals like tourmaline and spodumene. Usually found in ancient continental crustal zones.

Uses & applications

A major source of the element lithium; used in the manufacturing of glass and ceramics, and frequently polished for jewelry, beads, and metaphysical specimens.

Geological facts

Lepidolite is known as the 'peace stone' or 'grandmother stone' in folklore because it naturally contains lithium, which is used in pharmaceutical mood stabilizers.

Field identification & locations

Identify in the field by its distinct lilac-to-pink color and its flaky, mica-like structure. It can be scratched with a copper penny. Common locations include Brazil, Canada, Madagascar, and the USA (California/Maine).

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