mineral
Lepidolite
K(Li,Al)3(Al,Si,3O8)2(F,OH)2
AI-generated identification · may be incorrectMohs hardness 2.5 to 4, pink to purple color, pearly luster, monoclinic crystal system, perfect basal cleavage, specific gravity 2.8 to 2.9.
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Physical properties
Mohs hardness 2.5 to 4, pink to purple color, pearly luster, monoclinic crystal system, perfect basal cleavage, specific gravity 2.8 to 2.9.
Formation & geological history
Forms in lithium-rich granitic pegmatites and high-temperature hydrothermal veins through crystallization of volatile-rich melts.
Uses & applications
Primary ore of lithium, used in specialty glass manufacturing, and collected as a decorative mineral specimen.
Geological facts
Lepidolite is known as a lithium mica and often occurs alongside other rare-element minerals like tourmaline and spodumene.
Field identification & locations
Identified by its distinctive lilac-pink color and micaceous flaky cleavage; found worldwide including in Brazil, Madagascar, and the USA.
