igneous
Weathered granite (probable)
Granite, a coarse-grained felsic intrusive igneous rock
AI-generated identification · may be incorrectRough, mottled reddish-brown and gray; likely quartz, feldspar, and mica. Typical granite hardness is about 6–7 Mohs, with a granular crystalline texture and no prominent cleavage; exact properties cannot be confirmed from the image.
Identified More igneous →
Explore Weathered granite (probable) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Rough, mottled reddish-brown and gray; likely quartz, feldspar, and mica. Typical granite hardness is about 6–7 Mohs, with a granular crystalline texture and no prominent cleavage; exact properties cannot be confirmed from the image.
Formation & geological history
Granite forms when silica-rich magma cools slowly underground, allowing visible crystals to grow. Its age depends on its source and cannot be determined from appearance alone.
Uses & applications
Granite is widely used as dimension stone, paving, countertops, and aggregate; this small rough specimen is mainly suitable for collecting.
Geological facts
The reddish color commonly comes from iron-stained potassium feldspar or weathering, but the image does not show enough detail to verify the mineral grains.
Field identification & locations
A granular mix of interlocking light and dark minerals supports identification as granite; inspect a fresh surface with a hand lens to distinguish quartz, feldspar, and mica. Granite occurs worldwide in continental crust.
