mineral
Lepidolite
K(Li,Al)3(Si,Al)4O10(F,OH)2
AI-generated identification · may be incorrectLepidolite has a Mohs hardness of 2.5 to 4, a pink to purple color, and a pearly to vitreous luster. It exhibits perfect basal cleavage and a monoclinic crystal system.
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Physical properties
Lepidolite has a Mohs hardness of 2.5 to 4, a pink to purple color, and a pearly to vitreous luster. It exhibits perfect basal cleavage and a monoclinic crystal system.
Formation & geological history
It typically forms in lithium-rich granitic pegmatites and high-temperature quartz veins through hydrothermal processes.
Uses & applications
Lepidolite is a major ore of the alkali metal lithium and is frequently used in jewelry, as tumbled stones, and by mineral collectors.
Geological facts
This mineral is known as the 'stone of transition' in metaphysical circles and often occurs alongside other lithium-bearing minerals like tourmaline and spodumene.
Field identification & locations
It is easily identified by its characteristic lilac-purple color and mica-like flaky cleavage. Notable deposits are found in Brazil, Madagascar, the USA, and Russia.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Limonite
FeO(OH)•nH2O
mineral
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Feldspar
Feldspar Group (Tectosilicate, e.g., KAlSi3O8)
mineral
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous