mineral

Lepidolite

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

Hardness: 2.5 - 4 on the Mohs scale. Color: Pink, purple, lilac, grey-white. Luster: Pearly to vitreous. Crystal structure: Monoclinic. Cleavage: Perfect basal. Specific gravity: 2.8 - 2.9.

Hardness: 2
Color: Pink, purple, lilac, grey-white
Luster: Pearly to vitreous

Identified August 7, 2026More mineral →

Explore Lepidolite in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 2.5 - 4 on the Mohs scale. Color: Pink, purple, lilac, grey-white. Luster: Pearly to vitreous. Crystal structure: Monoclinic. Cleavage: Perfect basal. Specific gravity: 2.8 - 2.9.

Formation & geological history

Formed in lithium-rich granitic pegmatites, high-temperature quartz veins, and greisens. Geological age varies widely depending on the host pegmatite formation, often Precambrian to Cenozoic.

Uses & applications

Primary ore of the alkali metal lithium; used in glass and ceramic manufacturing; occasionally cut into cabochons or tumbled for metaphysical and crystal collecting markets.

Geological facts

Lepidolite is known as a 'mica of transition' due to its variable lithium and aluminum content. It is one of the few distinct lithium-bearing minerals that can form large, visually striking masses.

Field identification & locations

Easily identified by its characteristic lilac-pink or purple color and flaky, micaceous cleavage. Found globally in pegmatite-rich regions such as Brazil, Madagascar, the USA (California), and Russia. Collectors should handle it with care due to its softness and perfect cleavage.