mineral
Small rounded quartz-rich pebble
Likely quartz (SiO₂), possibly iron-stained or mixed with other minerals
AI-generated identification · may be incorrectTranslucent gray-brown with a vitreous sheen and rounded, weathered edges. Quartz has Mohs hardness 7, a trigonal crystal structure, and no cleavage; the image does not show enough detail to confirm the specimen’s exact composition or specific gravity.
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Physical properties
Translucent gray-brown with a vitreous sheen and rounded, weathered edges. Quartz has Mohs hardness 7, a trigonal crystal structure, and no cleavage; the image does not show enough detail to confirm the specimen’s exact composition or specific gravity.
Formation & geological history
Likely weathered from quartz-bearing rock and transported by water or other sedimentary processes; its geological age cannot be determined from the image.
Uses & applications
Small quartz pebbles are mainly collected or used decoratively; quartz is also important in glassmaking, electronics, and construction materials.
Geological facts
Quartz is one of Earth’s most abundant minerals and commonly occurs in many rock types.
Field identification & locations
Look for glassy luster, translucence, and hardness sufficient to scratch ordinary glass; iron staining can create brown or reddish patches. Quartz occurs worldwide, but this pebble’s source is unknown.
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Metamorphic
Sandstone (with potential mineral staining/concretions)
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Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
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Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
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