mineral

Lepidolite

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

Hardness of 2.5 to 4 on the Mohs scale, pink to purple or lilac color, pearly to vitreous luster, monoclinic crystal system, perfect basal cleavage, specific gravity of 2.8 to 2.9.

Identified August 5, 2026More mineral →

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Physical properties

Hardness of 2.5 to 4 on the Mohs scale, pink to purple or lilac color, pearly to vitreous luster, monoclinic crystal system, perfect basal cleavage, specific gravity of 2.8 to 2.9.

Formation & geological history

Forms in granite pegmatites, high-temperature quartz veins, and greisens through hydrothermal processes associated with lithium-rich magmas.

Uses & applications

Primary ore of the alkali metal lithium, used in specialty glass, ceramics, and occasionally cut into cabochons or collected as mineral specimens.

Geological facts

Lepidolite is one of the primary lithium-bearing minerals and is easily recognized by its distinctive lilac-pink color and mica-like flaky cleavage sheets.

Field identification & locations

Found in pegmatite deposits worldwide including Brazil, the United States, Madagascar, and Russia. Identified by its micaceous habit and pinkish-purple hue.