igneous
Granite Pebble
Granite (Felsic intrusive igneous rock)
Hardness: 6-7 (Mohs scale); Color: Mottled grey, white, and pinkish-orange; Luster: Dull to vitreous; Structure: Phaneritic (medium-grained crystalline); Primary Minerals: Quartz, Feldspar, and Mica.
- Hardness
- 6-7 (Mohs scale)
- Color
- Mottled grey, white, and pinkish-orange
- Luster
- Dull to vitreous
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 (Mohs scale); Color: Mottled grey, white, and pinkish-orange; Luster: Dull to vitreous; Structure: Phaneritic (medium-grained crystalline); Primary Minerals: Quartz, Feldspar, and Mica.
Formation & geological history
Formed through the slow crystallization of magma below Earth's surface. This specific specimen has been chemically weathered and physically rounded by water transport in a river or coastal environment.
Uses & applications
Commonly used in large scale construction, road base, and landscaping. As a polished stone, it is used for countertops and monuments. This specific pebble has interest for amateur collectors.
Geological facts
Granite makes up a large portion of the Earth's continental crust. It is extremely durable and resistant to acid rain, making it a preferred material for outdoor sculptures and buildings.
Field identification & locations
Identify by its 'salt and pepper' appearance and visible interlocking crystals of varied colors. It cannot be scratched by a steel knife. Commonly found in riverbeds and mountainous terrain.
