mineral

Quartz-rich rock, likely milky quartz vein material

Predominantly quartz (SiO₂), with possible iron-oxide staining or minor feldspar

AI-generated identification · may be incorrect

White to cream, opaque, with a glassy-to-dull luster and irregular fracture; quartz has Mohs hardness 7, hexagonal crystal structure, and no cleavage. The photo does not show enough detail to identify any minor minerals confidently.

Identified September 29, 2026More mineral →

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At a glance

Common name: Quartz-rich rock, likely milky quartz vein material
Scientific name: Predominantly quartz (SiO₂), with possible iron-oxide staining or minor feldspar
Category: mineral
Identified: September 29, 2026
Method: Standard

AI Estimated Value

About $1–$10 for an ordinary hand-sized rough fragment; more if it proves unusually well-crystallized or comes from a documented locality.

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

Likely formed as silica-rich fluid filled fractures and crystallized as a quartz vein; the specimen’s age and exact formation setting cannot be determined from the image alone.

Uses & applications

Quartz is used in glassmaking, electronics, abrasives, and decorative stone; this rough fragment appears suitable mainly for collecting or as a teaching specimen.

Geological facts

Quartz is one of Earth’s most abundant minerals and commonly forms veins in many kinds of bedrock.

Field identification & locations

Look for its hardness (it can scratch glass), lack of cleavage, and uneven fracture; white quartz is widespread in veins and gravel deposits. A closer examination or streak and hardness tests would help distinguish it from calcite or feldspar.