mineral

Milky quartz vein material

Quartz, silicon dioxide (SiO₂), likely massive vein quartz

AI-generated identification · may be incorrect

Mostly white to gray, translucent in places, with a vitreous-to-dull luster and irregular fracture; quartz has Mohs hardness 7, trigonal crystal structure, no cleavage, and specific gravity about 2.65. The brown-gray patches may be iron or other mineral staining/inclusions.

Identified October 15, 2026More mineral →

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Physical properties

Formation & geological history

Quartz commonly precipitates from silica-rich hydrothermal fluids in fractures, forming veins; the specimen’s age cannot be determined from the image. Vein quartz occurs in rocks of many geological ages and settings.

Uses & applications

Used as a silica source in glass and industrial materials; attractive pieces may be used in landscaping, crafts, or mineral collections.

Geological facts

Quartz is one of Earth’s most abundant minerals and often forms veins that cut through older host rock.

Field identification & locations

Look for hardness sufficient to scratch glass, lack of cleavage, and a glassy fracture; common worldwide in bedrock veins and stream gravels. The image supports a quartz-rich identification, but exact inclusions are uncertain.