mineral
Lepidolite in Quartz
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 / SiO2
Hardness: 2.5-3 (Lepidolite) to 7 (Quartz); Color: Pale purple/lilac and white; Luster: Pearly to vitreous; Crystal Structure: Monoclinic (mica) and Trigonal (quartz); Specific Gravity: 2.8-2.9
- Hardness
- 2
- Color
- Pale purple/lilac and white
- Luster
- Pearly to vitreous
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Physical properties
Hardness: 2.5-3 (Lepidolite) to 7 (Quartz); Color: Pale purple/lilac and white; Luster: Pearly to vitreous; Crystal Structure: Monoclinic (mica) and Trigonal (quartz); Specific Gravity: 2.8-2.9
Formation & geological history
Found primarily in granitic pegmatites. Formed from the cooling of magma enriched in lithium and silica during the final stages of crystallization.
Uses & applications
Used as an ore of lithium, in the manufacture of glass and ceramics to increase heat resistance, as a decorative stone, and popular in metaphysical collecting.
Geological facts
Lepidolite is the most common lithium-bearing mineral. Its name is derived from the Greek 'lepidos' for scale, referring to its micaceous, scaly appearance.
Field identification & locations
Identify by its distinctive lilac/purple color and micaceous sparkle (glittery scales) often hosted in white quartz. Commonly found in Brazil, Canada, and Madagascar.
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