mineral

Weathered quartz-rich rock fragment

Likely quartz-bearing feldspathic fragment; exact identification requires testing

AI-generated identification · may be incorrect

Small, pale cream specimen with white/translucent granular areas and a dull-to-glassy luster; likely hardness about 6–7 Mohs, with irregular fracture and no clearly visible cleavage. The image is insufficient to distinguish quartz, feldspar, or a weathered light-colored rock confidently.

Identified September 20, 2026More mineral →

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Physical properties

Formation & geological history

Probably a naturally weathered fragment of quartz-rich igneous or metamorphic material, potentially granite, pegmatite, or quartz-bearing vein rock; its geological age cannot be determined visually.

Uses & applications

Common material has little commercial value as an isolated fragment, though quartz and feldspar are important in glass, ceramics, electronics, and construction aggregate.

Geological facts

A glass-scratch test, streak test, and close examination of cleavage would help separate quartz from feldspar; quartz does not show cleavage, whereas feldspar commonly breaks along two planes.

Field identification & locations

Look for hardness, transparency, crystal faces, and cleavage; quartz-rich fragments are widespread worldwide, especially in granitic terrains, pegmatites, and eroded stream gravels.