mineral
Lepidolite
K(Li,Al)3(Al,Si,3O10)(F,OH)2
AI-generated identification · may be incorrectLepidolite has a Mohs hardness of 2.5 to 4, a pearly to vitreous luster, and a pink to purple color. 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 pearly to vitreous luster, and a pink to purple color. It exhibits perfect basal cleavage and a monoclinic crystal system.
Formation & geological history
It forms in granite pegmatites and high-temperature quartz veins through the concentration of lithium during late-stage magmatic crystallization.
Uses & applications
Lepidolite is a major ore mineral for the alkali metal lithium and is frequently collected as a decorative mineral specimen.
Geological facts
This mineral is often associated with other lithium-bearing minerals like tourmaline and spodumene. Its distinct lilac-gray color comes from trace amounts of manganese.
Field identification & locations
Field identification is aided by its characteristic lilac-pink color, mica-like flaky cleavage sheets, and pegmatite environment.
