mineral

Quartz (Clear Quartz)

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Colorless to white; Luster: Vitreous (glassy); Crystal Structure: Trigonal; Cleavage: None, exhibits conchoidal fracture; Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Colorless to white
Luster: Vitreous (glassy)

Identified August 3, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless to white; Luster: Vitreous (glassy); Crystal Structure: Trigonal; Cleavage: None, exhibits conchoidal fracture; Specific Gravity: 2.65

Formation & geological history

Forms in a wide variety of geological environments, commonly crystallizing from silica-rich hydrothermal veins, pegmatites, and as a primary component of igneous, metamorphic, and sedimentary rocks.

Uses & applications

Used in electronics, oscillator circuits, watches, glassmaking, abrasives, and as a gemstone or collectible specimen in jewelry.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust, following feldspar. Its piezoelectric properties allow it to generate an electrical charge when compressed, making it crucial for modern technology.

Field identification & locations

Can be identified in the field by its high hardness (scratches glass), conchoidal fracture, and lack of cleavage. Commonly found worldwide in almost all rock types and mineral environments.