igneous
Weathered granite pebble
Granite, a quartz–feldspar–mica plutonic rock
AI-generated identification · may be incorrectCoarse, unevenly speckled grains with pink-orange feldspar, pale quartz, and dark minerals; typically Mohs 6–7, vitreous quartz and dull feldspar, with no consistent cleavage as a whole rock. The rounded shape and rusty color likely reflect water wear and iron-oxide staining.
Identified More igneous →
Explore Weathered granite pebble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Coarse, unevenly speckled grains with pink-orange feldspar, pale quartz, and dark minerals; typically Mohs 6–7, vitreous quartz and dull feldspar, with no consistent cleavage as a whole rock. The rounded shape and rusty color likely reflect water wear and iron-oxide staining.
Formation & geological history
Granite crystallizes slowly from silica-rich magma deep in continental crust; granites range from Archean to recent geologic ages. This pebble was likely rounded during transport in a stream or along a shore.
Uses & applications
Granite is widely used as dimension stone, paving, aggregate, and countertops; this small rounded specimen is mainly suitable for collecting or display.
Geological facts
Pink coloration commonly comes from potassium feldspar, while orange-brown surface tones can result from iron oxidation.
Field identification & locations
Look for interlocking visible crystals of quartz and feldspar, often with scattered dark mica; the specimen’s worn, rounded outline suggests transport. Granite occurs widely in continental mountain belts and glacial or river deposits.
