mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, transparent to translucent, vitreous luster, trigonal crystal system, no true cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to translucent, vitreous luster, trigonal crystal system, no true cleavage, specific gravity of 2.65.
Formation & geological history
Formed in a wide variety of geological environments including igneous, metamorphic, and sedimentary rocks. Often found as resistant pebbles in stream beds and beaches due to high weathering resistance.
Uses & applications
Used in glassmaking, electronics, oscillators, abrasives, gemstones, and ornamental items.
Geological facts
Quartz is one of the most abundant and ubiquitous minerals found in the Earth's continental crust. Its piezoelectric properties make it essential in modern electronics.
Field identification & locations
Easily identified by its hardness (scratches glass), conchoidal fracture, and lack of cleavage. Found globally in almost all geological terrains.
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