metamorphic
Quartz Vein Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, grayish-green with a white quartz band, vitreous luster, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, grayish-green with a white quartz band, vitreous luster, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed through hydrothermal mineral deposition filling fractures in host rock, subsequently weathered and water-tumbled into a pebble.
Uses & applications
Used primarily as a decorative stone, landscape gravel, or specimen for amateur rock collectors.
Geological facts
Quartz veins are the primary geological source for hydrothermal gold deposits worldwide. Water tumbling creates the smooth, rounded edges seen on stream pebbles.
Field identification & locations
Identify by its hardness (scratches glass), distinctive contrasting light-colored vein, and smooth water-worn surface. Found globally in riverbeds and glacial tills.
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