mineral
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, white to translucent color with gray patches, vitreous luster, conchoidal fracture, no cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, white to translucent color with gray patches, vitreous luster, conchoidal fracture, no cleavage, specific gravity of 2.65.
Formation & geological history
Formed through crystallization in igneous, metamorphic, or sedimentary environments, subsequently weathered, transported, and rounded by water action in rivers or marine environments.
Uses & applications
Used in landscaping, decorative stone, glass manufacturing, abrasives, and as a common specimen for beginning rock collectors.
Geological facts
Quartz is one of the most abundant and durable minerals on Earth's continental crust, highly resistant to both chemical and mechanical weathering.
Field identification & locations
Easily identified by its high hardness (scratches glass), lack of cleavage, and smooth, water-worn shape. Commonly found in riverbeds, beaches, and glacial 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
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
Septarian Pebble
Septarian nodule / Concretion
sedimentary