igneous

Uncertain pale granitoid or weathered feldspathic rock

Likely granite or granodiorite; chiefly quartz, feldspar, and minor mica, but the photograph is insufficient for precise identification.

AI-generated identification · may be incorrect

Coarse-grained, pale gray-beige, and dull to slightly sparkly, with irregular fracture and no obvious cleavage visible. Typical granite hardness is about 6–7 Mohs and specific gravity 2.63–2.75.

Identified August 30, 2026More igneous →

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At a glance

Common name: Uncertain pale granitoid or weathered feldspathic rock
Scientific name: Likely granite or granodiorite; chiefly quartz, feldspar, and minor mica, but the photograph is insufficient for precise identification.
Category: igneous
Identified: August 30, 2026
Method: Standard

AI Estimated Value

$0–$5 for an ordinary fragment; perhaps $5–$20 if unusually attractive, locality-labeled, or part of a curated specimen.

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

Coarse-grained, pale gray-beige, and dull to slightly sparkly, with irregular fracture and no obvious cleavage visible. Typical granite hardness is about 6–7 Mohs and specific gravity 2.63–2.75.

Formation & geological history

Likely crystallized slowly from silica-rich magma deep in the crust, generally during Precambrian to Phanerozoic mountain-building events; exact age and origin require locality and testing.

Uses & applications

Granite and granodiorite are widely used as building stone, countertops, paving aggregate, monuments, and decorative specimens; this small fragment has negligible commercial value.

Geological facts

Individual feldspar grains may weather to a chalky appearance, while quartz remains glassier and harder. A streak, hardness test, and close-grained examination would help distinguish it from altered metamorphic rock.

Field identification & locations

Common worldwide, especially in continental mountain belts and exposed plutons. Look for interlocking visible quartz and feldspar grains; a steel nail should not easily scratch fresh quartz-rich surfaces.