igneous
Granite
Phaneritic plutonic rock (Quartzo-feldspathic)
Hardness: 6-7 (Mohs scale), Color: tan, white, and black (peppered), Luster: dull to vitreous, Structure: phaneritic (large visible crystals), Cleavage: poor/irregular
Identified More igneous →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-7 (Mohs scale), Color: tan, white, and black (peppered), Luster: dull to vitreous, Structure: phaneritic (large visible crystals), Cleavage: poor/irregular
Formation & geological history
Formed by the slow crystallization of magma below the Earth's surface (intrusive). Commonly found in continental crust and mountain ranges, dating from various eras.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, and monuments due to its durability and aesthetic appeal.
Geological facts
Granite is one of the hardest substances in the world and makes up a significant portion of the Earth's continental crust. Mount Rushmore is carved into a granite batholith.
Field identification & locations
Identify by looking for interlocked crystals of quartz (clear/grey), feldspar (tan/pink), and mica (black specks). Common in riverbeds and mountainous terrain.
