mineral
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Hardness of 7 on the Mohs scale, milky white color, vitreous to greasy luster, trigonal crystal system, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, milky white color, vitreous to greasy luster, trigonal crystal system, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed from hydrothermal veins or as a weather-resistant mineral weathering out of igneous and metamorphic rocks, then rounded by water transport in streams or beaches.
Uses & applications
Used in landscaping, decorative stone, glass manufacturing, electronics, and as tumbled stones for crafts.
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust and is exceptionally resistant to both mechanical and chemical weathering.
Field identification & locations
Identified by its high hardness (scratches glass), white color, and lack of cleavage. Common worldwide in riverbeds, beaches, and gravel deposits.
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