mineral
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, white to clear color, vitreous luster, trigonal crystal system, and conchoidal fracture with no true cleavage.
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Physical properties
Hardness of 7 on Mohs scale, white to clear color, vitreous luster, trigonal crystal system, and conchoidal fracture with no true cleavage.
Formation & geological history
Forms primarily from the crystallization of magma in igneous environments or through hydrothermal veins, later weathered into rounded pebbles by water transport.
Uses & applications
Used in glassmaking, electronics, abrasives, and as decorative landscape gravel or tumbling stones.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties, generating electricity under mechanical stress.
Field identification & locations
Identified easily by its high hardness which scratches glass and lack of reactivity to acid; commonly found in riverbeds, beaches, and soils globally.
