mineral

Lepidolite (in Quartz Matrix)

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

Hardness: 2.5-3.5 on Mohs scale; Color: Pink, purplish, or lilac; Luster: Pearly to vitreous; Crystal Structure: Monoclinic; Cleavage: Perfect basal (micaceous); Specific Gravity: 2.8-2.9

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

Identified April 10, 2026More mineral →

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Physical properties

Hardness: 2.5-3.5 on Mohs scale; Color: Pink, purplish, or lilac; Luster: Pearly to vitreous; Crystal Structure: Monoclinic; Cleavage: Perfect basal (micaceous); Specific Gravity: 2.8-2.9

Formation & geological history

Formed in late-stage magmatic crystallization within granitic pegmatites. It is often found associated with other lithium-bearing minerals like spodumene and tourmaline.

Uses & applications

A major source of lithium (used in batteries and glass production); common as a lapidary material for jewelry, cabochons, and ornamental carvings; highly valued by mineral collectors for its unique color.

Geological facts

Lepidolite is the most common lithium-bearing mineral. Its color is derived from traces of manganese. While it is a mica, it typically occurs in fine-grained scaly aggregates rather than large sheets.

Field identification & locations

Identify in the field by its distinct lilac-purple color, micaceous 'glittery' texture, and relatively low hardness. It is commonly found in Brazil, California (USA), Africa, and Canada.

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