igneous
Rounded granite pebble
Granite, a quartz–feldspar–mica plutonic rock
AI-generated identification · may be incorrectCoarse, mottled gray, cream, and dark grains with a dull to slightly crystalline luster; constituent minerals are typically Mohs 6–7 (quartz) and 6 (feldspar). The visible rounded shape is from abrasion; the image does not allow confident mineral or crystal-structure confirmation.
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
Coarse, mottled gray, cream, and dark grains with a dull to slightly crystalline luster; constituent minerals are typically Mohs 6–7 (quartz) and 6 (feldspar). The visible rounded shape is from abrasion; the image does not allow confident mineral or crystal-structure confirmation.
Formation & geological history
Likely formed by slow cooling of silica-rich magma deep in Earth’s crust, then weathered and rounded by transport in water or glacial ice. Granite occurs in rocks of many ages, so this specimen’s age cannot be determined from the image.
Uses & applications
Granite is widely used as building and paving stone, countertops, monuments, and decorative aggregate; this small pebble is mainly suitable for collecting or decoration.
Geological facts
Granite’s interlocking quartz and feldspar grains give it durability, while dark flecks are commonly mica or amphibole.
Field identification & locations
A speckled mixture of light and dark grains and a hard, rounded surface suggest granite; common source regions include continental mountain belts and glacial or river deposits. A closer view or scratch test would help confirm identification.
