mineral
Lepidolite
K(Li,Al)3(Si,Al)4O10(F,OH)2
AI-generated identification · may be incorrectHardness of 2.5 to 4 on the Mohs scale, pink to purple or lilac color, pearly to vitreous luster, monoclinic crystal system, perfect basal cleavage, specific gravity of 2.8 to 2.9.
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Physical properties
Hardness of 2.5 to 4 on the Mohs scale, pink to purple or lilac color, pearly to vitreous luster, monoclinic crystal system, perfect basal cleavage, specific gravity of 2.8 to 2.9.
Formation & geological history
Forms in granite pegmatites, high-temperature quartz veins, and greisens through hydrothermal processes associated with lithium-rich magmas.
Uses & applications
Primary ore of the alkali metal lithium, used in specialty glass, ceramics, and occasionally cut into cabochons or collected as mineral specimens.
Geological facts
Lepidolite is one of the primary lithium-bearing minerals and is easily recognized by its distinctive lilac-pink color and mica-like flaky cleavage sheets.
Field identification & locations
Found in pegmatite deposits worldwide including Brazil, the United States, Madagascar, and Russia. Identified by its micaceous habit and pinkish-purple hue.
