mineral

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite - Lithium-rich Mica)

AI-generated identification · may be incorrect

Hardness: 2.5–3.5 on Mohs scale; Color: Pink, lilac, grayish-purple to silvery; Luster: Pearly to vitreous; Crystal Structure: Monoclinic (often appears in micaceous masses or 'books'); Cleavage: Perfect basal cleavage; Specific Gravity: 2.8–2.9

Hardness: 2
Color: Pink, lilac, grayish-purple to silvery
Luster: Pearly to vitreous

Identified March 22, 2026More mineral →

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Physical properties

Formation & geological history

Lepidolite is almost exclusively found in granite pegmatites. It forms from the late-stage crystallization of lithium-rich magmas, often associated with other minerals like tourmaline, quartz, and feldspar.

Uses & applications

A major source of lithium used in batteries and glass making; also highly popular in the metaphysical community and as a lapidary material for decorative carvings and jewelry beads.

Geological facts

Lepidolite is known as the 'Stone of Transition' or 'Peace Stone' because it contains lithium, which is used in medical mood-stabilizing drugs. It was originally named 'lilalite' before being renamed after the Greek word 'lepidos' for scale.

Field identification & locations

Identify in the field by its distinct lilac-purple color and micaceous (flaky/glittery) texture that can be scratched with a penny. Common locations include Brazil, Canada (Manitoba), the USA (California and Maine), and Zimbabwe.