mineral
Pale quartz-rich pebble
Likely vein quartz (SiO₂); exact identification is uncertain from the photograph
AI-generated identification · may be incorrectCream-white, opaque, rounded, and dull to slightly waxy; quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65. The specimen appears massive rather than visibly crystalline.
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Physical properties
Cream-white, opaque, rounded, and dull to slightly waxy; quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65. The specimen appears massive rather than visibly crystalline.
Formation & geological history
Likely formed as quartz in a vein or silica-rich rock, then weathered and rounded by transport in water or sediment. Its age cannot be determined from appearance alone.
Uses & applications
Quartz is widely used in glass, ceramics, electronics, and construction; attractive pieces may be kept as inexpensive curios or polished.
Geological facts
Quartz is one of Earth’s most abundant minerals and commonly survives weathering to become rounded pebbles.
Field identification & locations
A hard scratch-resistant surface and lack of cleavage support quartz; a steel knife should not readily scratch it. Similar pale pebbles occur in river gravels and on beaches worldwide; confirm with hardness and, if needed, streak tests.
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