igneous
Coarse-grained granite (likely)
Granite, a quartz–feldspar–mica plutonic rock
AI-generated identification · may be incorrectA rough, pale pink-and-gray specimen with visible interlocking grains, consistent with quartz, feldspar, and dark mica or amphibole. Typical granite hardness is about 6–7 Mohs; its minerals have distinct crystal structures and cleavage, while the rock has no overall cleavage.
Identified More igneous →
Explore Coarse-grained granite (likely) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
A rough, pale pink-and-gray specimen with visible interlocking grains, consistent with quartz, feldspar, and dark mica or amphibole. Typical granite hardness is about 6–7 Mohs; its minerals have distinct crystal structures and cleavage, while the rock has no overall cleavage.
Formation & geological history
Granite forms when silica-rich magma cools slowly beneath Earth’s surface, allowing large crystals to grow. Such rocks occur in crust of many ages; the image alone cannot establish this specimen’s age.
Uses & applications
Granite is widely used as dimension stone, countertops, paving, monuments, and aggregate; attractive pieces may be collected.
Geological facts
The image’s coarse, mottled texture suggests granite, though its mineral identity cannot be confirmed from the photograph alone.
Field identification & locations
Look for interlocking light quartz and feldspar grains with scattered dark minerals; granite is common in continental mountain belts and exposed shields. A hand lens and hardness tests can help verify it.
