mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Hardness of 7 on the Mohs scale, typically white or translucent, vitreous to greasy luster, hexagonal crystal system when formed well, conchoidal fracture with no true cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically white or translucent, vitreous to greasy luster, hexagonal crystal system when formed well, conchoidal fracture with no true cleavage, specific gravity of 2.65.
Formation & geological history
Formed via crystallization from silica-rich solutions or magmas, commonly weathered out from igneous or metamorphic rocks and rounded over time by water action in streams and beaches.
Uses & applications
Used in landscaping, decorative stone, glass manufacturing, electronics, and lapidary arts.
Geological facts
Quartz is one of the most abundant and durable minerals in Earth's continental crust, able to withstand weathering that destroys most other minerals.
Field identification & locations
Easily identified by its high hardness (scratches glass), lack of cleavage, and resistance to weathering. Found worldwide in nearly all geological environments.
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