mineral

Quartz Vein in Host Rock

Silicon dioxide (SiO2) within metamorphic or igneous matrix

AI-generated identification · may be incorrect

Mohs hardness 7, white to clear color, vitreous luster, hexagonal crystal system, conchoidal fracture with no true cleavage, specific gravity 2.65.

Identified October 19, 2026More mineral →

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Physical properties

Mohs hardness 7, white to clear color, vitreous luster, hexagonal crystal system, conchoidal fracture with no true cleavage, specific gravity 2.65.

Formation & geological history

Formed via hydrothermal precipitation where silica-rich fluids crystallized inside fractures of older country rock.

Uses & applications

Used in gemstone carving, manufacturing silica glass, electronics, and sought after by mineral collectors.

Geological facts

Quartz veins are the primary geological structures responsible for hosting lode gold deposits worldwide. The stark contrast between the white quartz and the dark host rock clearly illustrates hydrothermal veining.

Field identification & locations

Identify by testing hardness against steel and observing white crystalline growth filling a distinct rock fracture. Commonly found globally in mountainous or metamorphic terranes.