mineral

Likely weathered quartz-bearing rock

Probably quartz-rich pegmatite or altered feldspathic rock; exact identification is uncertain from the image

AI-generated identification · may be incorrect

Pale gray, white, and rusty orange material with a rough, granular texture and locally translucent areas; likely quartz and weathered feldspar with iron-oxide staining. Quartz hardness is Mohs 7, vitreous luster, and no cleavage; the specimen appears irregular and massive rather than showing clear crystals.

Identified August 18, 2026More mineral →

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At a glance

Common name: Likely weathered quartz-bearing rock
Scientific name: Probably quartz-rich pegmatite or altered feldspathic rock; exact identification is uncertain from the image
Category: mineral
Identified: August 18, 2026
Method: Standard

AI Estimated Value

Typically $1-$10 as an unverified hand specimen; potentially $10-$30 if confirmed as attractive pegmatite or mineralized quartz.

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 in a silica-rich igneous vein or pegmatite, then altered and stained by weathering and oxidation. Its geological age cannot be determined from the photograph.

Uses & applications

Unlikely to have commercial value as shown; quartz-rich rock is used in aggregate, glass, ceramics, and silica products, while attractive pieces may be collected as curiosities.

Geological facts

The orange-brown coloration commonly results from iron oxides such as limonite or hematite coating fractures and weathered surfaces.

Field identification & locations

Look for glassy fracture, hardness sufficient to scratch ordinary glass, and possible quartz grains; a streak, acid, and hardness test would help distinguish it from calcite-bearing rock. Quartz-rich rocks occur worldwide, especially near granitic intrusions and hydrothermal veins.