sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, white to greyish color with a vitreous to greasy luster, trigonal crystal system, conchoidal fracture, and a specific gravity of around 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, white to greyish color with a vitreous to greasy luster, trigonal crystal system, conchoidal fracture, and a specific gravity of around 2.65.
Formation & geological history
Formed through the accumulation and weathering of durable quartz grains over millions of years, often rounded by water transport in rivers or beaches.
Uses & applications
Used in landscaping, decorative stone, manufacturing of glass, and abrasive materials.
Geological facts
Quartz is one of the most abundant and durable minerals in the Earth's continental crust, highly resistant to both chemical and mechanical weathering.
Field identification & locations
Easily identified by its high hardness (scratches glass) and conchoidal fracture. Commonly found in riverbeds, beaches, and conglomerate rocks worldwide.
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Fossiliferous Concretion
Septarian Concretion containing Brachiopods/Crinoids
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Quartz pebble
Silicon dioxide (SiO2)
sedimentary
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Lithic fragment / Weathered rock
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Banded Siltstone / Mudstone Pebble
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