mineral
Milky quartz pebble
Quartz (SiO₂), trigonal crystal system
AI-generated identification · may be incorrectWhite to translucent, vitreous to dull luster, and commonly massive with no visible crystal faces; hardness 7 Mohs, no cleavage, and specific gravity about 2.65. The image shows a small, pale, irregular fragment, so identification is approximate.
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Physical properties
White to translucent, vitreous to dull luster, and commonly massive with no visible crystal faces; hardness 7 Mohs, no cleavage, and specific gravity about 2.65. The image shows a small, pale, irregular fragment, so identification is approximate.
Formation & geological history
Likely a naturally broken and water-worn quartz fragment formed when silica-rich fluids crystallized in a vein; quartz occurs in rocks of many ages and settings.
Uses & applications
Commonly used in glassmaking, abrasives, and engineered stone; attractive pieces may be used in crafts or collections.
Geological facts
Quartz is one of Earth’s most abundant minerals and breaks with a curved, conchoidal fracture rather than along cleavage planes.
Field identification & locations
Look for its glassy appearance, hardness (it scratches ordinary glass), and lack of cleavage; it is widespread in veins, river gravels, and many rock types. The photo’s scale and details are limited.
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