mineral
Lepidolite
K(Li,Al)3(Al,Si,3O10)(F,OH)2
AI-generated identification · may be incorrectHardness: 2.5 - 4 on the Mohs scale. Color: Pink, purple, lilac, grey-white. Luster: Pearly to vitreous. Crystal structure: Monoclinic. Cleavage: Perfect basal. Specific gravity: 2.8 - 2.9.
- Hardness
- 2
- Color
- Pink, purple, lilac, grey-white
- Luster
- Pearly to vitreous
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Physical properties
Hardness: 2.5 - 4 on the Mohs scale. Color: Pink, purple, lilac, grey-white. Luster: Pearly to vitreous. Crystal structure: Monoclinic. Cleavage: Perfect basal. Specific gravity: 2.8 - 2.9.
Formation & geological history
Formed in lithium-rich granitic pegmatites, high-temperature quartz veins, and greisens. Geological age varies widely depending on the host pegmatite formation, often Precambrian to Cenozoic.
Uses & applications
Primary ore of the alkali metal lithium; used in glass and ceramic manufacturing; occasionally cut into cabochons or tumbled for metaphysical and crystal collecting markets.
Geological facts
Lepidolite is known as a 'mica of transition' due to its variable lithium and aluminum content. It is one of the few distinct lithium-bearing minerals that can form large, visually striking masses.
Field identification & locations
Easily identified by its characteristic lilac-pink or purple color and flaky, micaceous cleavage. Found globally in pegmatite-rich regions such as Brazil, Madagascar, the USA (California), and Russia. Collectors should handle it with care due to its softness and perfect cleavage.
