sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness 7 on Mohs scale, grayish-white to off-white, dull to vitreous luster, microcrystalline or massive aggregate, uneven to conchoidal fracture.
Identified More sedimentary →
Explore Quartz Pebble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness 7 on Mohs scale, grayish-white to off-white, dull to vitreous luster, microcrystalline or massive aggregate, uneven to conchoidal fracture.
Formation & geological history
Formed through weather erosion and transport of quartz-rich igneous or metamorphic rocks into stream beds or sedimentary deposits.
Uses & applications
Commonly used in construction aggregate, landscaping, aquariums, or as general gravel.
Geological facts
Quartz is one of the most abundant minerals on Earth's continental crust and is exceptionally resistant to mechanical and chemical weathering.
Field identification & locations
Identified by its hardness (scratches glass), lack of distinct cleavage, and light neutral color. Extremely common worldwide in riverbeds, beaches, and soil.
More like this
Other sedimentary specimens
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
sedimentary