mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
AI-generated identification · may be incorrectHardness: 2.5-3 (Mohs scale), Color: Pink, purplish, or lilac, Luster: Vitreous to pearly, Crystal structure: Monoclinic, Cleavage: Perfect basal (micaceous)
- Hardness
- 2
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Physical properties
Hardness: 2.5-3 (Mohs scale), Color: Pink, purplish, or lilac, Luster: Vitreous to pearly, Crystal structure: Monoclinic, Cleavage: Perfect basal (micaceous)
Formation & geological history
Formed primarily in granitic pegmatites through late-stage crystallization. It is one of the major sources of the rare alkali metals lithium and rubidium.
Uses & applications
Used as a source of lithium for glass making and batteries. Also popular as a decorative gemstone, in jewelry (cabochons), and as metaphysical stones for stress relief.
Geological facts
Lepidolite is often called the 'peace stone' or 'grandmother stone' in folklore. It is a member of the mica group and is significant as a primary lithium ore.
Field identification & locations
Identify by its distinct purplish-pink color and micaceous (flaky) texture. Often found in association with other lithium minerals like tourmaline and spodumene. Common in Brazil, Canada, and the USA.
