mineral

Quartz vein in host rock

Predominantly quartz (SiO₂), likely a milky quartz vein; host rock is unclear from the image

AI-generated identification · may be incorrect

The pale, coarse, irregular specimen appears white to cream with a vitreous-to-dull luster and no obvious cleavage. Quartz has Mohs hardness 7, a trigonal crystal structure, and specific gravity about 2.65; surface weathering obscures diagnostic details.

Identified September 26, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed when silica-rich fluids filled fractures and crystallized as a vein, later exposed by weathering. Its geological age and exact host-rock setting cannot be determined from the photograph.

Uses & applications

Quartz is used in glass, electronics, abrasives, and decorative stone; this rough, fractured piece is mainly a field or beginner collecting specimen.

Geological facts

Quartz is among Earth’s most abundant minerals and commonly forms veins cutting older rocks.

Field identification & locations

Look for hardness sufficient to scratch glass, lack of cleavage, and irregular/conchoidal fracture; common in many bedrock regions. The image shows quartz-like material, but a closer view or hardness test would help confirm it.