mineral

Lepidolite

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

Hardness: 2.5–3.5 on the Mohs scale; Color: Pink, lilac, or purplish-gray; Luster: Vitreous to pearly; Crystal structure: Monoclinic (often found in micaceous, scaly masses); Cleavage: Perfect basal.

Hardness: 2
Color: Pink, lilac, or purplish-gray
Luster: Vitreous to pearly

Identified March 16, 2026More mineral →

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Physical properties

Formation & geological history

Formed in granitic pegmatites. It is a secondary mineral usually produced late in the crystallization process of the magma, often in association with other lithium minerals like tourmaline or spodumene.

Uses & applications

A major source of the rare element lithium. Also used in glass making to increase durability, as an ornamental stone in decorative carvings, and in metaphysical collecting.

Geological facts

Lepidolite is the most common lithium-bearing mineral on Earth. Its name is derived from the Greek word 'lepidos' for scale, referring to its scaly appearance which is typical of the mica group.

Field identification & locations

Identify by its distinctive purplish color and the presence of glittering, flaky, mica-like layers. It is commonly found in Brazil, Canada (Manitoba), and the United States (Maine and California). Collector tip: It is very soft and can be easily scratched or flaked with a fingernail.

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Mineral/Rock

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Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

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