igneous
Granite Pebble
Granite
Hardness: 6-7 on Mohs scale. Color: brownish-tan, pinkish, gray with specks of quartz and feldspar. Luster: dull to earthy when weathered. Texture: phaneritic (coarse-grained). Cleavage: uneven fracture.
- Hardness
- 6-7 on Mohs scale
- Luster
- dull to earthy when weathered
Identified More igneous →
Explore Granite Pebble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-7 on Mohs scale. Color: brownish-tan, pinkish, gray with specks of quartz and feldspar. Luster: dull to earthy when weathered. Texture: phaneritic (coarse-grained). Cleavage: uneven fracture.
Formation & geological history
Formed by the slow crystallization of felsic magma deep beneath the Earth's surface (intrusive igneous). Rounded through natural fluvial or glacial erosion over time.
Uses & applications
Commonly used as decorative garden stone, construction aggregate, gravel, and for land landscaping.
Geological facts
Granite makes up a large portion of the Earth's continental crust. Over millions of years, water or ice smooths coarse granite chunks into rounded river pebbles like this one.
Field identification & locations
Identified by its rounded shape, earthy brownish-tan color, and coarse crystalline texture containing visible grains of quartz and feldspar. Found abundantly in riverbeds, beaches, and glacial till deposits.
