mineral
Milky quartz pebble
Quartz (silicon dioxide, SiO₂)
AI-generated identification · may be incorrectLikely a small, naturally rounded, opaque-white quartz pebble with a dull to slightly glassy surface. Quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65.
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Physical properties
Likely a small, naturally rounded, opaque-white quartz pebble with a dull to slightly glassy surface. Quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65.
Formation & geological history
Quartz forms in many igneous, metamorphic, and hydrothermal settings; this pebble was likely rounded by erosion and transport. Quartz is common across rocks of many geological ages.
Uses & applications
Quartz is used in glass, electronics, abrasives, and jewelry; small pebbles are mainly collected or used decoratively.
Geological facts
Quartz is among Earth’s most abundant minerals and resists weathering, so it commonly accumulates in stream and beach gravels.
Field identification & locations
The image is consistent with a quartz pebble, though its small size and surface make exact identification uncertain. Look for hardness—quartz can scratch glass—and lack of cleavage; common worldwide in gravel deposits.
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