mineral
Rounded quartz-rich pebble (likely milky quartz)
Quartz, SiO₂; exact rock identity cannot be confirmed from the image alone
AI-generated identification · may be incorrectPale cream to white, opaque, with a faint vitreous-to-waxy luster and rounded, water-worn surfaces. Quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65.
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Physical properties
Pale cream to white, opaque, with a faint vitreous-to-waxy luster and rounded, water-worn surfaces. Quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65.
Formation & geological history
Likely a quartz-rich fragment weathered from bedrock and rounded during transport by water; quartz forms in many geological settings and spans a wide range of ages.
Uses & applications
Quartz is used in glass, ceramics, electronics, and construction; attractive pebbles are used in landscaping and collections.
Geological facts
Quartz is one of Earth’s most abundant minerals and resists weathering, so it commonly accumulates in river and beach gravels.
Field identification & locations
Look for hardness sufficient to scratch glass and lack of cleavage; the smooth shape indicates abrasion. Similar pebbles occur in riverbeds and beaches worldwide.
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