mineral

Lepidolite

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

Hardness: 2.5-3 (Mohs scale), Color: Pink, lilac, to deep purple, Luster: Vitreous to pearly, Crystal structure: Monoclinic (often found as massive aggregates), Specific gravity: 2.8-2.9

Hardness: 2

Identified July 19, 2026More mineral →

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Physical properties

Hardness: 2.5-3 (Mohs scale), Color: Pink, lilac, to deep purple, Luster: Vitreous to pearly, Crystal structure: Monoclinic (often found as massive aggregates), Specific gravity: 2.8-2.9

Formation & geological history

Formed in granitic pegmatites, often associated with other lithium-bearing minerals like spodumene and tourmaline. Typically formed in the late stages of magma crystallization.

Uses & applications

Major source of lithium used in batteries and glass production; widely used in jewelry (beads, cabochons) and as a decorative stone for metaphysical collectors.

Geological facts

Lepidolite is the most common lithium-bearing mineral and contains rare earth elements like rubidium. It is often referred to as the 'peace stone' in homeopathic circles due to its high lithium content, which is used in mood-stabilizing medications.

Field identification & locations

Identify by its distinctive lilac-purple color and micaceous (flaky) structure if in raw form. Commonly found in Brazil, Canada, Madagascar, and the United States (California, Maine). Collectors should look for its characteristic micaceous sheen.