mineral
White Quartz Pebble
Silicon Dioxide (SiO2) - Quartz
Hardness 7 on Mohs scale, milky white translucent to opaque color, vitreous to waxy luster, trigonal crystal structure (smoothly rounded by natural water erosion), no cleavage, specific gravity around 2.65.
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Physical properties
Hardness 7 on Mohs scale, milky white translucent to opaque color, vitreous to waxy luster, trigonal crystal structure (smoothly rounded by natural water erosion), no cleavage, specific gravity around 2.65.
Formation & geological history
Formed in igneous, metamorphic, or hydrothermal environments. Over time, erosion and transport by rivers, streams, or ocean waves smooth and polish the quartz into a rounded pebble.
Uses & applications
Used widely in decorative landscaping, aquarium gravel, stone tumbling hobbies, craft projects, and historically in stone tool making.
Geological facts
Quartz is one of the most abundant minerals on Earth's surface. Milky white quartz gets its cloudy appearance from microscopic fluid inclusions trapped inside the crystal lattice during formation.
Field identification & locations
Identified by its hardness (scratches glass readily), smooth river-worn oval shape, lack of cleavage, and translucent milky body. Extremely common along riverbeds, beaches, and glacial deposits worldwide.
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