mineral

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; Cleavage: Perfect basal (micaceous sheets); Specific Gravity: 2.8–2.9

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

Identified July 2, 2026More mineral →

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Physical properties

Hardness: 2.5–3 on Mohs scale; Color: Pink, lilac, or purple; Luster: Pearly to vitreous; Crystal Structure: Monoclinic; Cleavage: Perfect basal (micaceous sheets); Specific Gravity: 2.8–2.9

Formation & geological history

Forms in granitic pegmatites, which are igneous rocks with exceptionally large crystals. Formation occurs during the final stages of magma crystallization where lithium is concentrated.

Uses & applications

A major source of lithium for glass and ceramic production; also used in jewelry, as a decorative stone, and highly valued by metaphysical collectors.

Geological facts

Lepidolite is the most common lithium-bearing mineral. It often contains traces of rare elements like Rubidium and Cesium, which can be extracted for specialized industrial uses.

Field identification & locations

Identify by its distinct lilac to pink color and its 'glittery' micaceous appearance where tiny scales catch the light. Found in pegmatite districts such as Brazil, Madagascar, and San Diego County, USA.