
igneous
Weathered Granite
Granite (Felsic intrusive igneous rock)
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, golden-brown to yellow-orange coloration due to iron oxide staining, dull to sub-vitreous luster, and phaneritic (coarse-grained) crystal structure.
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Physical properties
Hardness of 6-7 on the Mohs scale, golden-brown to yellow-orange coloration due to iron oxide staining, dull to sub-vitreous luster, and phaneritic (coarse-grained) crystal structure.
Formation & geological history
Formed from the slow cooling of magma rich in silica and potassium deep beneath the Earth's surface, often dating back hundreds of millions of years.
Uses & applications
Commonly used in construction, monument building, landscaping, and aggregate materials due to its exceptional durability.
Geological facts
The distinct yellowish-brown surface crust is caused by the chemical weathering and oxidation of iron-bearing minerals within the rock over time.
Field identification & locations
Identify by its visible interlocking crystals of quartz, feldspar, and mica, heavily stained with iron oxides. Found globally in continental shields and mountain roots.