mineral
Quartz Pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, pale tan to off-white color, dull to waxy weathered luster, trigonal crystal system with no cleavage.
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Physical properties
Hardness of 7 on Mohs scale, pale tan to off-white color, dull to waxy weathered luster, trigonal crystal system with no cleavage.
Formation & geological history
Formed originally via igneous or hydrothermal crystallization, then eroded, transported, and rounded by fluvial or marine wave action.
Uses & applications
Commonly used as decorative landscape gravel, aggregate in construction, or kept as basic collection pebbles.
Geological facts
Quartz is one of the most abundant and mechanically resilient minerals in the Earth's continental crust, easily surviving long-distance river transport.
Field identification & locations
Identified by its high hardness (scratches glass), lack of visible cleavage planes, and rounded, water-worn exterior found along riverbeds and shores.
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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
Unidentified pink-and-gray mineral or rock specimen
Undetermined; the image is too blurry for reliable identification
mineral