mineral

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Hardness of 7 on the Mohs scale, transparent to translucent with a vitreous to greasy luster, trigonal crystal system, conchoidal fracture with no true cleavage, and a specific gravity of 2.65.

Identified August 6, 2026More mineral →

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Physical properties

Hardness of 7 on the Mohs scale, transparent to translucent with a vitreous to greasy luster, trigonal crystal system, conchoidal fracture with no true cleavage, and a specific gravity of 2.65.

Formation & geological history

Formed through hydrothermal precipitation, where silica-rich fluids moved through fractures in the host rock and crystallized within the open spaces, creating a vein structure.

Uses & applications

Used in the manufacturing of glass, ceramics, electronics, precision instruments, and as a raw material for gemstones and mineral collecting.

Geological facts

Quartz is one of the most abundant minerals in Earth's continental crust and is well known for its piezoelectric properties, meaning it generates an electric charge under mechanical stress.

Field identification & locations

Easily identified by its high hardness (scratches glass) and conchoidal fracture. Quartz veins are commonly found traversing metamorphic and igneous host rocks worldwide.