sedimentary
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, white to translucent color, vitreous to greasy luster, trigonal crystal system, and Conchoidal fracture with no true cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, white to translucent color, vitreous to greasy luster, trigonal crystal system, and Conchoidal fracture with no true cleavage.
Formation & geological history
Formed through the mechanical weathering and prolonged aqueous transport of parent rocks, highly resistant to chemical erosion.
Uses & applications
Used in landscaping, decorative stone, abrasive manufacturing, and raw material for glass production.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and is exceptionally durable against chemical weathering.
Field identification & locations
Identified by its high hardness (scratches glass), white color, and smooth water-worn shape; commonly found in riverbeds and beaches globally.
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Sedimentary limestone with invertebrate fossil imprint
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Sandstone or Siltstone
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Shale (clastic sedimentary rock)
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Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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