mineral

Quartz (Granular)

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale), Color: White/Translucent/Grey, Luster: Vitreous to waxy, Crystal Structure: Trigonal (Hexagonal), Cleavage: Indistinct/Conchoidal fracture.

Identified June 2, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale), Color: White/Translucent/Grey, Luster: Vitreous to waxy, Crystal Structure: Trigonal (Hexagonal), Cleavage: Indistinct/Conchoidal fracture.

Formation & geological history

Forms in nearly all geological environments, primarily through the cooling of silica-rich magma or from hydrothermal veins. These specific small fragments appear to be weathered grit or gravel pieces.

Uses & applications

Used in glass manufacturing, electronics (as oscillators), abrasives, and as construction aggregate. While common, clear crystals are used as gemstones and in jewelry.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is chemically very stable and can survive long periods of weathering, which is why it dominates most beach sand.

Field identification & locations

Identify in the field by its hardness (it will scratch glass and steel) and its lack of cleavage planes. Found globally in almost all outcrops and riverbeds.