mineral

Lepidolite

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

Hardness: 2.5–3 on Mohs scale; Color: Pink, lilac, purplish-gray; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Perfect mica-like basal cleavage; Specific gravity: 2.8–2.9

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

Identified March 30, 2026More mineral →

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Physical properties

Hardness: 2.5–3 on Mohs scale; Color: Pink, lilac, purplish-gray; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Perfect mica-like basal cleavage; Specific gravity: 2.8–2.9

Formation & geological history

Formed in lithium-bearing granitic pegmatites during the final stages of magmatic crystallization. It is a secondary source of lithium and often found alongside quartz, feldspar, spodumene, and tourmaline.

Uses & applications

A major source of lithium used in rechargeable batteries, glass, and ceramics. It is also highly sought after by collectors and utilized in the metaphysical/jewelry industry as a semi-precious stone.

Geological facts

Lepidolite is known as the 'Stone of Transition' or 'Peace Stone' because it contains a high amount of lithium, which is actually used in some anti-anxiety medications. The name is derived from the Greek word 'lepidos' for scale.

Field identification & locations

Identify in the field by its distinct purple-to-pink hue and its scaly, micaceous (glittery/flaky) texture. Common locations include Brazil, Canada (Tanco Mine), Madagascar, Russia, and the USA (California and Maine).

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