mineral
Lepidolite in Quartz Matrix
K(Li,Al)3(Al,Si,3O10)(F,OH)2 / SiO2
AI-generated identification · may be incorrectMohs hardness 2.5-4 for lepidolite, 7 for quartz. Color is pinkish-purple to gray with a pearly to vitreous luster. Monoclinic crystal system with perfect basal cleavage.
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Physical properties
Mohs hardness 2.5-4 for lepidolite, 7 for quartz. Color is pinkish-purple to gray with a pearly to vitreous luster. Monoclinic crystal system with perfect basal cleavage.
Formation & geological history
Formed in lithium-rich granitic pegmatites through fractional crystallization of magma.
Uses & applications
Primary ore of lithium, used in specimen collecting, and occasionally carved into ornamental objects.
Geological facts
Lepidolite is a potassium lithium aluminum sheet silicate mineral that often contains minor amounts of rubidium and cesium.
Field identification & locations
Identified by its distinct lilac-pink color and micaceous flaky habit, commonly found in pegmatite-rich regions like Brazil, Madagascar, and the USA.
