
mineral
Small polished or naturally worn stone, possibly quartz-bearing rock
Indeterminate from the blurred image; likely quartz (SiO₂) or a pale feldspar-rich fragment
AI-generated identification · may be incorrectThe specimen appears gray-green, translucent to opaque, and irregular with a slight vitreous or waxy luster. Quartz has Mohs hardness 7, no cleavage, and conchoidal fracture; feldspar is Mohs 6–6.5 with two cleavage directions.
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Physical properties
The specimen appears gray-green, translucent to opaque, and irregular with a slight vitreous or waxy luster. Quartz has Mohs hardness 7, no cleavage, and conchoidal fracture; feldspar is Mohs 6–6.5 with two cleavage directions.
Formation & geological history
Likely a naturally weathered fragment from an igneous or metamorphic rock; exact formation age and host rock cannot be determined visually. Quartz commonly crystallizes from cooling magma or hydrothermal fluids.
Uses & applications
Quartz-bearing stones are used as aggregate, abrasives, glass and ceramics; attractive pieces may be collected or used decoratively. This small fragment has little commercial value unless diagnostic minerals or gem quality are confirmed.
Geological facts
The image is too low-resolution and the specimen is too small for confident species identification. A scratch test, streak test, magnification, and clearer close-up would distinguish quartz from feldspar or another pale mineral.
Field identification & locations
Look for crystal faces, cleavage, translucency, and hardness; quartz should not be scratched by a steel knife, while feldspar may be. Common sources include stream gravel, weathered granite, pegmatites, and metamorphic veins.
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