igneous
Lepidolite in Quartz Matrix
Lepidolite (K(Li,Al)3(Al,Si)4O10(F,OH)2) in Quartz (SiO2) matrix
Hardness: 2.5-3.5 (Lepidolite), 7 (Quartz); Color: Lavender, pinkish-purple, grey-white; Luster: Pearly to vitreous; Crystal Structure: Monoclinic (micaceous sheets within matrix)
- Hardness
- 2
- Color
- Lavender, pinkish-purple, grey-white
- Luster
- Pearly to vitreous
Identified More igneous →
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Physical properties
Hardness: 2.5-3.5 (Lepidolite), 7 (Quartz); Color: Lavender, pinkish-purple, grey-white; Luster: Pearly to vitreous; Crystal Structure: Monoclinic (micaceous sheets within matrix)
Formation & geological history
Formed in granitic pegmatites, which are the last stages of magma crystallization, often enriched in rare elements like lithium. Commonly found in Precambrian or Paleozoic formations.
Uses & applications
Major source of lithium; used in glass and ceramic production to increase strength; heavily used for metaphysical collecting and carvings.
Geological facts
Lepidolite is the most common lithium-bearing mineral. It is often referred to as the 'Stone of Transition' in folklore due to its high lithium content, which is used meditatively to promote calm.
Field identification & locations
Identify by its distinctive lilac or pink color and mica-like flaky structure within white or grey quartz. Commonly found in pegmatite districts of Brazil, Madagascar, and the USA (California/Maine).
