Quartz Mineral

Physical Properties

Hardness: 7 on Mohs scale; Color: Colorless to white/translucent; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & Geological History

Formed through the crystallization of magma or precipitation from hydrothermal veins. It is found in igneous, metamorphic, and sedimentary environments across all geological ages.

Uses & Applications

Used in glassmaking, abrasives, electronic oscillators (piezoelectric properties), jewelry (gemstones), and as a structural component in concrete.

Geological Facts

Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge when mechanical stress is applied.

Field Identification & Locations

Identify in the field by its hardness (will scratch glass), lack of cleavage, and translucent appearance. It is found globally in riverbeds, mountains, and desert sands.

Identified on: 4/17/2026

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