mineral

Lepidolite

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

Hardness: 2.5-3.5 on Mohs scale; Color: Pink, purplish, or lilac; Luster: Pearly to vitreous; Crystal structure: Monoclinic (often found in micaceous masses); Cleavage: Perfect basal.

Hardness: 2
Color: Pink, purplish, or lilac
Luster: Pearly to vitreous

Identified July 4, 2026More mineral →

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Physical properties

Hardness: 2.5-3.5 on Mohs scale; Color: Pink, purplish, or lilac; Luster: Pearly to vitreous; Crystal structure: Monoclinic (often found in micaceous masses); Cleavage: Perfect basal.

Formation & geological history

Formed primarily in lithium-bearing granite pegmatites. It is often associated with other lithium minerals like spodumene and tourmaline.

Uses & applications

A minor source of lithium; used in glass making and ceramics to increase toughness. Widely used as a decorative stone and for metaphysical purposes in the form of crystals or tumbled stones.

Geological facts

Lepidolite is the most common lithium-bearing mineral and was first discovered in the 18th century. It is often called the 'peace stone' or 'grandmother stone' in holistic circles due to its high lithium content.

Field identification & locations

Identified by its purplish color and micaceous (peeling) habit. Found in pegmatite-rich regions like Brazil, Canada, Madagascar, and the United States (California and Maine). Look for flexible, lilac-colored flakes.