igneous
Lepidolite in Quartz (or Lepidolite Ore)
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) in Quartz (SiO2)
Hardness: 2.5-3 (Lepidolite) to 7 (Quartz); Color: Purple, lilac, pinkish-grey; Luster: Pearly to vitreous; Crystal Structure: Monoclinic (Mica); Cleavage: Perfect basal.
- Hardness
- 2
- Color
- Purple, lilac, pinkish-grey
- Luster
- Pearly to vitreous
Identified More igneous →
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Physical properties
Hardness: 2.5-3 (Lepidolite) to 7 (Quartz); Color: Purple, lilac, pinkish-grey; Luster: Pearly to vitreous; Crystal Structure: Monoclinic (Mica); Cleavage: Perfect basal.
Formation & geological history
Formed in granitic pegmatites during the final stages of magmatic crystallization. Higher concentrations of Lithium are required for its formation, often found in late-stage hydrothermal veins.
Uses & applications
Major source of lithium for batteries, glass making, and ceramics. Also used as a decorative stone, in lapidary work, and for metaphysical/collector purposes.
Geological facts
Lepidolite is the most common lithium-bearing mineral. It is often referred to as the 'peace stone' in New Age circles because it contains lithium, which is used medically to stabilize moods.
Field identification & locations
Identify by its distinctive lilac/purple color and micaceous 'glittery' flakes when broken. Commonly found in Brazil, Africa (Zimbabwe), and the USA (California and Maine).
