mineral

Quartz with Mica/Host Rock

Silicon Dioxide (SiO2) with Phyllosilicates

Hardness: 7 (Quartz); Color: Clear/White (Quartz) and Black/Grey (Mica/Matrix); Luster: Vitreous to Pearly; Crystal structure: Hexagonal; Cleavage: None (conchoidal fracture).

Hardness: 7 (Quartz)
Color: Clear/White (Quartz) and Black/Grey (Mica/Matrix)
Luster: Vitreous to Pearly

Identified May 25, 2026More mineral →

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Physical properties

Hardness: 7 (Quartz); Color: Clear/White (Quartz) and Black/Grey (Mica/Matrix); Luster: Vitreous to Pearly; Crystal structure: Hexagonal; Cleavage: None (conchoidal fracture).

Formation & geological history

Formed from cooling magma in igneous intrusions or through hydrothermal vein activity, common in granitic pegmatites and metamorphic environments.

Uses & applications

Quartz is used in electronics for its piezoelectric properties, glass manufacturing, and as a semi-precious gemstone. Mica is used as an insulator and in cosmetics.

Geological facts

Quartz is one of the most abundant minerals in Earth's crust. It is often found associated with minerals like mica, feldspar, and tourmaline in rock complexes.

Field identification & locations

Identify by its ability to scratch glass, non-metallic luster, and uneven fracture. Common in mountainous regions worldwide with granitic or metamorphic basement rocks.

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