mineral
Lepidolite with Tourmaline in Quartz Matrix
K(Li,Al)3(Si,Al)4O10(F,OH)2 (Lepidolite) / SiO2 (Quartz)
AI-generated identification · may be incorrectHardness: 2.5–3 (Lepidolite) and 7 (Quartz). Color: Lavender-pink, purple, with white quartz and green/dark tourmaline inclusions. Luster: Pearly to vitreous. Crystal Structure: Monoclinic (Lepidolite), Trigonal (Quartz). Cleavage: Perfect basal (mica-like flakes). Specific Gravity: 2.8–2.9.
- Hardness
- 2
- Luster
- Pearly to vitreous
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Physical properties
Hardness: 2.5–3 (Lepidolite) and 7 (Quartz). Color: Lavender-pink, purple, with white quartz and green/dark tourmaline inclusions. Luster: Pearly to vitreous. Crystal Structure: Monoclinic (Lepidolite), Trigonal (Quartz). Cleavage: Perfect basal (mica-like flakes). Specific Gravity: 2.8–2.9.
Formation & geological history
Formed in high-lithium granitic pegmatites during late-stage magmatic crystallization, where fluid enrichment allows lithium-rich mica (lepidolite) and tourmaline to grow alongside quartz and feldspar.
Uses & applications
Major ore of lithium used in batteries and glass production; popular gemstone material for carvings, cabochons, and mineral specimen collections; widely sold as a metaphysical healing stone.
Geological facts
Lepidolite is one of the primary sources of lithium, the lightest metallic element. It derives its distinctive lilac/purple color from trace amounts of manganese substitute within its crystal lattice.
Field identification & locations
Identify in the field by its distinct scaly, micaceous purple flakes embedded in quartz or feldspar. Frequently found in pegmatite districts such as Brazil, Madagascar, California (USA), and Zimbabwe.
