mineral

Lepidolite

K(Li,Al)3(Al,Si,4)10(O,F,OH)2

Mohs hardness of 2.5 to 4; lavender, pink, or purple color; pearly to vitreous luster; monoclinic crystal system; perfect basal cleavage; specific gravity around 2.8 to 2.9.

Identified August 3, 2026More mineral →

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Physical properties

Mohs hardness of 2.5 to 4; lavender, pink, or purple color; pearly to vitreous luster; monoclinic crystal system; perfect basal cleavage; specific gravity around 2.8 to 2.9.

Formation & geological history

Formed in lithium-rich granitic pegmatites and high-temperature quartz veins, often crystallizing during the late stages of magma crystallization.

Uses & applications

Primary ore of the alkali metal lithium, used in glass and ceramic manufacturing, and as a popular specimen for mineral collectors and lapidary arts.

Geological facts

Lepidolite is one of the few abundant lithium-bearing minerals and is closely associated with other lithium minerals like spodumene and tourmaline.

Field identification & locations

Easily identified by its distinctive lilac or pink color and micaceous, flaky cleavage planes. Found globally in pegmatite-rich regions such as Brazil, Madagascar, the United States, and Russia.