metamorphic

Weathered quartz-bearing rock

Likely quartz-veined schist or gneiss; exact identification is uncertain from the image

AI-generated identification · may be incorrect

Brown, rough, weathered surface with small white patches that may be quartz or feldspar. Hardness and crystal structure cannot be determined from the photograph; quartz, if present, has Mohs hardness 7 and a vitreous luster.

Identified September 28, 2026More metamorphic →

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Physical properties

Formation & geological history

Could have formed when mineral-rich fluids deposited quartz in fractures in metamorphic rock, later exposed by weathering. Age and precise formation environment cannot be established from the image.

Uses & applications

An ordinary outcrop specimen is mainly of geological or educational interest; quartz-rich rock may be used as aggregate or building stone if suitable.

Geological facts

The pale spots may be small quartz crystals, but they could also be feldspar or surface mineral deposits; a close-up or fresh broken surface would help distinguish them.

Field identification & locations

Look for persistent light-colored veins or patches cutting across darker, foliated rock; quartz resists scratching by a steel knife. Similar rocks occur in metamorphic terrains worldwide.