igneous
Red Granite
Granite
AI-generated identification · may be incorrectHardness: 6-7 (Mohs scale), Color: Predominantly red/orange with black and gray speckles, Luster: Vitreous when polished, Crystal structure: Phaneritic (coarse-grained) texture, Cleavage: None (fractures irregularly)
Identified More igneous →
Explore Red Granite 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: Predominantly red/orange with black and gray speckles, Luster: Vitreous when polished, Crystal structure: Phaneritic (coarse-grained) texture, Cleavage: None (fractures irregularly)
Formation & geological history
Formed by the slow cooling and crystallization of magma deep beneath the Earth's surface (intrusive igneous). The red color is typically due to a high concentration of potassium feldspar (orthoclase).
Uses & applications
Commonly used as a dimension stone in construction (countertops, tiles, monuments, building facades) and as landscaping or decorative stone.
Geological facts
Granite is the most common intrusive igneous rock in the Earth's continental crust. This specific piece appears to have been tumbled or polished by water action, likely found on a beach or riverbed.
Field identification & locations
Identify by its speckled, coarse-grained appearance and hardness. Commonly found worldwide, especially in ancient continental shield areas. Look for the distinct mix of feldspar (red/pink/white), quartz (gray/clear), and mica or hornblende (black).
