![Lepidolite (in Quartz Matrix) (Lepidolite [K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2]) — mineral](https://media.rockidentification.com/caa51019-74a9-468f-90e9-acdfac6dbd35-compressed.jpg)
mineral
Lepidolite (in Quartz Matrix)
Lepidolite [K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2]
AI-generated identification · may be incorrectHardness: 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
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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.
