mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
AI-generated identification · may be incorrectHardness 2.5-3 (Mohs scale), Vitreous to pearly luster, Monoclinic crystal system, Color: lilac, lavender, rose-red. Micaceous (cleaves in thin sheets), specific gravity: 2.8-2.9.
- Color
- lilac, lavender, rose-red
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Physical properties
Hardness 2.5-3 (Mohs scale), Vitreous to pearly luster, Monoclinic crystal system, Color: lilac, lavender, rose-red. Micaceous (cleaves in thin sheets), specific gravity: 2.8-2.9.
Formation & geological history
Formed in granitic pegmatites during late-stage crystallization from magma rich in lithium and fluorine. Often associated with other lithium minerals like spodumene or tourmaline.
Uses & applications
A primary source of the rare element lithium. Widely used in jewelry (cabochons), ornamental carvings, and as a 'healing stone' in spiritual communities.
Geological facts
Lepidolite is the most common lithium-bearing mineral. Its name is derived from the Greek 'lepidos' for scale, referring to its scaly, micaceous appearance.
Field identification & locations
Identify in the field by its distinct purple/lilac hue and its softness (can be scratched by a copper penny). Commonly found in Brazil, Madagascar, and the United States (California, Maine).
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous