mineral

Lepidolite

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

Hardness: 2.5–3.5 on Mohs scale; Color: Pink, lilac, or purple; Luster: Pearly to vitreous; Crystal Structure: Monoclinic; Cleavage: Perfect basal cleavage; Specific Gravity: 2.8–2.9

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

Identified May 11, 2026More mineral →

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Physical properties

Hardness: 2.5–3.5 on Mohs scale; Color: Pink, lilac, or purple; Luster: Pearly to vitreous; Crystal Structure: Monoclinic; Cleavage: Perfect basal cleavage; Specific Gravity: 2.8–2.9

Formation & geological history

Forms in rare-metal granite pegmatites, usually in the late stages of magmatic crystallization where lithium and fluorine are concentrated. It is an important lithium-bearing mineral.

Uses & applications

A major source of lithium, used in mobile phone batteries and rechargeable technology. Also used for ornamental carvings, jewelry, and by mineral collectors for its unique color.

Geological facts

Lepidolite is lithium-rich mica and is often referred to as the 'peace stone' in metaphysical circles due to its high lithium content, which is used in mood-stabilizing medication.

Field identification & locations

Identify by its distinctive lilac color and pearly luster. Look for its tendency to flake into thin sheets like other micas. Common locations include Brazil, Canada, Madagascar, and the US (California/New Mexico).