
mineral
Small quartz pebble or silica-rich mineral fragment
Quartz (SiO₂), tentative
AI-generated identification · may be incorrectAppears pale tan to translucent, with a dull-to-glassy luster and irregular rounded form; quartz has Mohs hardness 7, no cleavage, conchoidal fracture, hexagonal crystal structure, and specific gravity about 2.65. The image is too blurred for confident identification.
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Physical properties
Appears pale tan to translucent, with a dull-to-glassy luster and irregular rounded form; quartz has Mohs hardness 7, no cleavage, conchoidal fracture, hexagonal crystal structure, and specific gravity about 2.65. The image is too blurred for confident identification.
Formation & geological history
Could be a naturally worn quartz grain or fragment derived from igneous, metamorphic, or sedimentary rocks; quartz commonly formed during crystallization from silica-rich melts or hydrothermal fluids. Its geological age cannot be determined visually.
Uses & applications
Common quartz is used in glass, ceramics, abrasives, electronics, and construction aggregate; attractive transparent pieces may be collectible or used as gemstones.
Geological facts
Quartz is one of Earth’s most abundant minerals and is highly resistant to weathering, allowing it to accumulate in sand and river gravels.
Field identification & locations
Test cautiously for hardness against a steel blade or glass, inspect for glassy fracture, and check translucency; a lens or clearer photo would help distinguish quartz from calcite, feldspar, or resin. Common worldwide, especially in veins, granites, quartzites, and alluvial gravels.
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