mineral

Lepidolite

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

AI-generated identification · may be incorrect

Hardness: 2.5-3.5 on Mohs scale; Color: Pink, lilac, to deep purple; Luster: Pearly to vitreous; Crystal Structure: Monoclinic; Cleavage: Perfect basal (micaceous); Specific Gravity: 2.8-2.9.

Hardness: 2
Color: Pink, lilac, to deep purple
Luster: Pearly to vitreous

Identified April 29, 2026More mineral →

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Physical properties

Hardness: 2.5-3.5 on Mohs scale; Color: Pink, lilac, to deep purple; Luster: Pearly to vitreous; Crystal Structure: Monoclinic; Cleavage: Perfect basal (micaceous); Specific Gravity: 2.8-2.9.

Formation & geological history

Formed in granitic pegmatites during late-stage crystallization where lithium is concentrated. It is part of the mica group and often occurs with other lithium minerals like tourmaline and spodumene.

Uses & applications

A major source of lithium (used in batteries and glass/ceramics). It is also highly valued for ornamental use, carved into spheres and jewelry, and collected by mineral enthusiasts.

Geological facts

Lepidolite was originally named 'lilalite' because of its lavender color, but was later renamed from the Greek 'lepis' for scale, referring to its micaceous structure. It is often called the 'Peace Stone' in metaphysical circles.

Field identification & locations

Identify by its distinctive purple color and micaceous sheen or flash. In the field, look for 'books' of scales or massive aggregates in pegmatite formations. Common locations include Brazil, Russia, and the USA (California and Maine).