mineral
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, transparent to translucent with a vitreous luster, and conchoidal fracture without cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to translucent with a vitreous luster, and conchoidal fracture without cleavage.
Formation & geological history
Formed via crystallization from silica-rich solutions in igneous, metamorphic, and sedimentary environments, often rounded by water transport.
Uses & applications
Used in glassmaking, electronics, abrasives, and as a polished decorative gemstone.
Geological facts
Quartz is one of the most abundant and durable minerals in Earth's continental crust, highly resistant to both chemical and mechanical weathering.
Field identification & locations
Identified easily by its high hardness (scratches glass), lack of cleavage, and resistance to acid; commonly found in riverbeds and beaches worldwide.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous