mineral

Lepidolite with Quartz

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

Hardness: 2.5-3.5 on Mohs scale; Color: Purple, lilac, pink, or grayish; Luster: Pearly to vitreous; Crystal structure: Monoclinic; Cleavage: Perfect basal cleavage; Specific gravity: 2.8-3.0.

Hardness: 2
Color: Purple, lilac, pink, or grayish
Luster: Pearly to vitreous

Identified May 9, 2026More mineral →

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Physical properties

Hardness: 2.5-3.5 on Mohs scale; Color: Purple, lilac, pink, or grayish; Luster: Pearly to vitreous; Crystal structure: Monoclinic; Cleavage: Perfect basal cleavage; Specific gravity: 2.8-3.0.

Formation & geological history

Lepidolite is a lilac-gray or rose-colored lithium-bearing mineral of the mica group. It is found in igneous environments, specifically pegmatites, and forms as a late-stage crystallizing mineral during the cooling of magma rich in volatile elements.

Uses & applications

Primary source of rare alkali metal lithium; used in glass and ceramic production to increase heat resistance; also popular in jewelry, lapidary carvings (points/wands), and for metaphysical collecting.

Geological facts

Lepidolite is the most common lithium-bearing mineral. It is often associated with other minerals like tourmaline, quartz, and amblygonite. It was discovered in the 18th century and is famous for its shimmering, flaky appearance when in crystal form.

Field identification & locations

Identify by its characteristic purple/lavender color and 'glittery' mica-like flakes. It is frequently found in Brazil, Canada, and the United States (Maine/California). To identify in the field, look for purple coloration in pegmatite veins and its softness (can be scratched by a copper coin).