metamorphic

Weathered quartz-rich rock, possibly vein quartz

Quartz-rich rock; predominantly silicon dioxide (SiO₂), exact rock type uncertain from the photograph

AI-generated identification · may be incorrect

Creamy white to tan, opaque and weathered, with a rough granular surface; quartz has Mohs hardness 7, vitreous luster on fresh surfaces, and no cleavage. The specimen’s texture and shape are not clear enough to determine its crystal structure or specific gravity reliably.

Identified October 4, 2026More metamorphic →

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At a glance

Common name: Weathered quartz-rich rock, possibly vein quartz
Scientific name: Quartz-rich rock; predominantly silicon dioxide (SiO₂), exact rock type uncertain from the photograph
Category: metamorphic
Identified: October 4, 2026
Method: Standard

AI Estimated Value

About $0–$10 for an ordinary, unverified field specimen; notable crystal features or proven provenance could increase value.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Could be a quartz vein or quartz-rich rock formed when silica-rich fluids filled fractures and crystallized, or a weathered fragment of another quartz-bearing rock. Its age and formation setting cannot be determined from the image.

Uses & applications

Quartz-rich material is used in glassmaking, construction aggregate, and decorative stone; this weathered piece appears chiefly suitable for casual collecting or landscaping.

Geological facts

Quartz is one of Earth’s most abundant minerals and commonly survives weathering because it is relatively hard and chemically durable.

Field identification & locations

Look for a hard, pale specimen that scratches glass and lacks obvious cleavage; inspect a freshly broken surface for a glassy luster. Similar quartz-rich material occurs worldwide, especially near veins and in eroded gravel.