igneous
Rose Quartz and Lepidolite in Pegmatite
Crystalline Silicon Dioxide (SiO2) with Lithium-rich Mica (K(Li,Al)3(Al,Si)4O10(F,OH)2)
Hardness: 7 (Quartz) to 2.5 (Mica); Color: Pink and white with purple-to-pink micaceous flakes; Luster: Vitreous to pearly; Crystal structure: Hexagonal/Monoclinic; Cleavage: None for quartz, perfect basal for mica; Specific gravity: 2.6-2.9
- Hardness
- 7 (Quartz) to 2
- Color
- Pink and white with purple-to-pink micaceous flakes
- Luster
- Vitreous to pearly
Identified More igneous →
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Physical properties
Hardness: 7 (Quartz) to 2.5 (Mica); Color: Pink and white with purple-to-pink micaceous flakes; Luster: Vitreous to pearly; Crystal structure: Hexagonal/Monoclinic; Cleavage: None for quartz, perfect basal for mica; Specific gravity: 2.6-2.9
Formation & geological history
Formed in the late stages of magmatic crystallization within granitic pegmatites. High concentrations of lithium and volatile elements allow for the growth of these specific mineral associations, typically in Proterozoic or Paleozoic formations.
Uses & applications
Primarily used as decorative lapidary material, a source of lithium (lepidolite), and in the metaphysical/crystal healing industry. Large blocks are occasionally used in landscaping.
Geological facts
Lepidolite is one of the major ores of the rare alkali metal lithium, which is essential for modern batteries. The pink color in the quartz often comes from fibrous inclusions of a borate mineral related to dumortierite.
Field identification & locations
Identified in the field by the association of hard, translucent pink/white quartz and soft, flaky, lilac-tinted mica. Commonly found in pegmatite districts such as those in Brazil, Madagascar, or Maine, USA.
