mineral

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 (Mohs scale); Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Hardness: 7 (Mohs scale)
Color: Milky white to translucent
Luster: Vitreous to greasy

Identified June 29, 2026More mineral →

Explore Quartz Vein in Host Rock in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 7 (Mohs scale); Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Formation & geological history

Formed through hydrothermal processes where hot, mineral-rich fluids circulate through fractures in crustal rocks. As the fluids cool, the minerals precipitate out and form 'veins'. This can occur across many geological eras.

Uses & applications

Quartz is used in glassmaking, electronics (piezoelectric properties), abrasives, and as a gemstone or collector's specimen.

Geological facts

Quartz is one of the most abundant minerals on Earth. Gold is frequently found associated with quartz veins in metamorphic and igneous terrains.

Field identification & locations

Can be identified by its ability to scratch glass and its lack of cleavage. Look for distinctive white bands cutting through darker, finer-grained host rocks like basalt or schist.