Rock Identifier
Quartz pebble (Silicon dioxide (SiO2)) — mineral
mineral

Quartz pebble

Silicon dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, typically white or colorless, vitreous luster, conchoidal fracture. This specimen is translucent to opaque and has some yellow/iron staining.

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Physical properties

Hardness of 7 on the Mohs scale, typically white or colorless, vitreous luster, conchoidal fracture. This specimen is translucent to opaque and has some yellow/iron staining.

Formation & geological history

Forms in igneous, metamorphic, and sedimentary rocks. Pebbles like this are formed through weathering and rounding by water transport in rivers or oceans.

Uses & applications

Common quartz is used in glassmaking, abrasives, and as a raw material for silicon. Polished pebbles may be collected or used decoratively.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust.

Field identification & locations

Identified by its hardness (scratches glass), lack of cleavage, and typical translucent white appearance. Commonly found worldwide in riverbeds and on beaches.

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Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

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