mineral

Lepidolite

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

Hardness 2.5-3 (Mohs scale), Vitreous to pearly luster, Monoclinic crystal system, Color: lilac, lavender, rose-red. Micaceous (cleaves in thin sheets), specific gravity: 2.8-2.9.

Color: lilac, lavender, rose-red

Identified March 20, 2026More mineral →

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Physical properties

Hardness 2.5-3 (Mohs scale), Vitreous to pearly luster, Monoclinic crystal system, Color: lilac, lavender, rose-red. Micaceous (cleaves in thin sheets), specific gravity: 2.8-2.9.

Formation & geological history

Formed in granitic pegmatites during late-stage crystallization from magma rich in lithium and fluorine. Often associated with other lithium minerals like spodumene or tourmaline.

Uses & applications

A primary source of the rare element lithium. Widely used in jewelry (cabochons), ornamental carvings, and as a 'healing stone' in spiritual communities.

Geological facts

Lepidolite is the most common lithium-bearing mineral. Its name is derived from the Greek 'lepidos' for scale, referring to its scaly, micaceous appearance.

Field identification & locations

Identify in the field by its distinct purple/lilac hue and its softness (can be scratched by a copper penny). Commonly found in Brazil, Madagascar, and the United States (California, Maine).

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