Mineral

Lepidolite

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

Hardness: 2.5–3 on Mohs scale; Color: Pink, lilac, or purple; Luster: Pearly to vitreous; Crystal Structure: Monoclinic (fine-grained micaceous mass in this specimen); Cleavage: Perfect basal (producing flakes); Specific Gravity: 2.8–2.9

Hardness: 2
Color: Pink, lilac, or purple
Luster: Pearly to vitreous

Identified March 22, 2026More mineral →

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Physical properties

Formation & geological history

Formed primarily in lithium-bearing granite pegmatites. It is late-stage igneous mineral associated with other lithium minerals like spodumene and tourmaline. Often found in Precambrian and younger pegmatite formations.

Uses & applications

Major secondary source of lithium (used in rechargeable batteries and glass-making); used widely in the metaphysical jewelry market, decorative carvings, and as spheres for collectors.

Geological facts

Lepidolite is the most common lithium-bearing mineral. It was originally named 'lilalite' due to its color before being renamed from the Greek word 'lepidos' for scale, referring to its flaky, micaceous appearance.

Field identification & locations

Identify in the field by its distinct lilac-to-pink color and micaceous (scaly/glittery) texture. It is commonly found in Brazil, Madagascar, Canada (Tanco Mine), and the USA (California and Maine). Look for it in pegmatite veins alongside quartz and cleavelandite.

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