mineral

Lepidolite

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

Hardness: 2.5-3.5 on Mohs scale; Color: Pink, lilac, purplish-gray; Luster: Pearly to vitreous; Crystal Structure: Monoclinic (often found in micaceous, scaly aggregates); Cleavage: Perfect basal (peels in thin sheets); Specific Gravity: 2.8-2.9

Hardness: 2
Color: Pink, lilac, purplish-gray
Luster: Pearly to vitreous

Identified July 3, 2026More mineral →

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Physical properties

Formation & geological history

Formed in granitic pegmatites and high-temperature hydrothermal veins. It is a secondary mineral associated with other lithium-bearing minerals like spodumene and tourmaline. Found in environments where volatile elements concentrate during the final stages of magma crystallization.

Uses & applications

Major ore of lithium, used in batteries and glass making. In jewelry, it is used for beads and cabochons. Widely collected as a healing stone in metaphysical circles and as a mineral specimen.

Geological facts

Lepidolite is the most common lithium-bearing mineral. Its name is derived from the Greek words 'lepis' for scale and 'lithos' for stone, referring to its scaly appearance. It often contains traces of rare elements like Rubidium and Cesium.

Field identification & locations

Identify by its characteristic lilac or pink color and micaceous (sheet-like) structure. In the field, look for it in pegmatite zones. Common locations include Brazil, Canada (Tanco Mine), Madagascar, and the USA (California and Maine).