mineral
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous to dull luster, conchoidal fracture, and typically translucent to opaque grayish-white.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous to dull luster, conchoidal fracture, and typically translucent to opaque grayish-white.
Formation & geological history
Formed through crystallization of igneous or hydrothermal solutions, subsequently eroded, smoothed, and rounded by fluvial or marine action.
Uses & applications
Commonly used in decorative landscaping, construction aggregate, and as abrasives; occasionally tumbled for jewelry or craft.
Geological facts
Quartz is one of the most common and resistant minerals on Earth's continental crust, surviving weathering that destroys surrounding host rocks.
Field identification & locations
Identified in the field by its hardness (scratches glass and steel) and lack of cleavage planes. Found abundantly in riverbeds, beaches, and gravel deposits 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
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous