igneous
Granite or Pegmatite with Mica
Granitoid
Hard, crystalline structure, speckled appearance, contains quartz, feldspar, and reflective mica flakes. Mohs hardness ~6-7.
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Physical properties
Hard, crystalline structure, speckled appearance, contains quartz, feldspar, and reflective mica flakes. Mohs hardness ~6-7.
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface.
Uses & applications
Commonly used in construction, countertops, monuments, and as aggregate.
Geological facts
Granite is one of the most common rocks in the continental crust.
Field identification & locations
Identify by its coarse-grained texture and visible mineral crystals. Found globally in continental crust areas.
