mineral

Lepidolite Pebble

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

Mohs hardness of 2.5 to 4; color ranges from pink, purple, to lilac-gray; pearly to vitreous luster; monoclinic crystal system; perfect basal cleavage; specific gravity of 2.8 to 2.9.

Identified August 7, 2026More mineral →

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Physical properties

Mohs hardness of 2.5 to 4; color ranges from pink, purple, to lilac-gray; 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 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 specialized glass, ceramics, and occasionally cut into cabochons or collected as mineral specimens.

Geological facts

Lepidolite is one of the main sources of lithium, an element crucial for modern rechargeable batteries. Its distinctive lilac color is due to trace amounts of manganese.

Field identification & locations

Identified by its soft texture, micaceous cleavage, and characteristic pink-to-purple coloration. Commonly found in pegmatite-rich regions worldwide, such as Brazil, Madagascar, and the USA.