mineral

Lepidolite

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

Hardness: 2.5-4 on Mohs scale, Color: Lilac, violet, pink, or gray, Luster: Pearly to vitreous, Crystal Structure: Monoclinic, Cleavage: Perfect basal, Specific Gravity: 2.8-2.9

Hardness: 2

Identified August 4, 2026More mineral →

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Physical properties

Hardness: 2.5-4 on Mohs scale, Color: Lilac, violet, pink, or gray, Luster: Pearly to vitreous, Crystal Structure: Monoclinic, Cleavage: Perfect basal, Specific Gravity: 2.8-2.9

Formation & geological history

Forms in granite pegmatites and high-temperature quartz veins, often associated with other lithium-bearing minerals like spodumene and tourmaline.

Uses & applications

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

Geological facts

Lepidolite is one of the few abundant minerals that contains lithium as an essential component, giving its characteristic purple/pink color.

Field identification & locations

Easily identified by its distinctive lilac-pink color, micaceous flaky structure, and soft feel. Commonly found in Madagascar, Brazil, Russia, and the USA.