igneous
Rounded granite pebble
Granite, predominantly quartz, feldspar, and mica
AI-generated identification · may be incorrectLikely Mohs hardness 6–7; pale gray-white, granular texture, dull to slightly vitreous luster, and no obvious cleavage as a whole rock. The rounded shape indicates natural abrasion or tumbling.
Identified More igneous →
Explore Rounded granite pebble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Likely Mohs hardness 6–7; pale gray-white, granular texture, dull to slightly vitreous luster, and no obvious cleavage as a whole rock. The rounded shape indicates natural abrasion or tumbling.
Formation & geological history
Granite crystallizes slowly from silica-rich magma, commonly deep within continental crust; typical specimens formed millions to billions of years ago and were later exposed and rounded in stream or glacial environments.
Uses & applications
Used extensively as building stone, aggregate, monuments, countertops, and landscaping rock; this small pebble has mainly educational or decorative value.
Geological facts
Visible dark flecks may be biotite or amphibole, while lighter grains are feldspar and quartz. Exact identification would be improved by a close-up and tests for grain boundaries, streak, and hardness.
Field identification & locations
Common in continental terrains worldwide, especially areas underlain by granite such as New England, the Sierra Nevada, Scandinavia, and parts of India. A coarse, interlocking mix of light feldspar/quartz and dark mica is characteristic.
