mineral

Lepidolite

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

Hardness: 2.5-3 (Mohs scale), Color: Pink, purplish, or lilac, Luster: Vitreous to pearly, Crystal structure: Monoclinic, Cleavage: Perfect basal (micaceous)

Hardness: 2

Identified May 5, 2026More mineral →

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Physical properties

Hardness: 2.5-3 (Mohs scale), Color: Pink, purplish, or lilac, Luster: Vitreous to pearly, Crystal structure: Monoclinic, Cleavage: Perfect basal (micaceous)

Formation & geological history

Formed primarily in granitic pegmatites through late-stage crystallization. It is one of the major sources of the rare alkali metals lithium and rubidium.

Uses & applications

Used as a source of lithium for glass making and batteries. Also popular as a decorative gemstone, in jewelry (cabochons), and as metaphysical stones for stress relief.

Geological facts

Lepidolite is often called the 'peace stone' or 'grandmother stone' in folklore. It is a member of the mica group and is significant as a primary lithium ore.

Field identification & locations

Identify by its distinct purplish-pink color and micaceous (flaky) texture. Often found in association with other lithium minerals like tourmaline and spodumene. Common in Brazil, Canada, and the USA.