Granite

Physical Properties

Hardness: 6-7 (Mohs scale), Color: light colored (white, pink, gray) with dark specks, Luster: Vitreous to dull, Crystal structure: Phaneritic (visible crystals), Cleavage: absent in bulk rock

Formation & Geological History

Formed from the slow crystallization of magma below Earth's surface (intrusive igneous rock). Geologic age varies from Precambrian to recent.

Uses & Applications

Extensively used in construction, monument making, architecture, countertops, and abrasive aggregates.

Geological Facts

Granite is one of the most common rocks in the continental crust and constitutes a significant portion of many mountain ranges.

Field Identification & Locations

Identify by its coarse-grained texture and light color with visible distinct minerals (quartz, feldspar, mica). Found worldwide in continental crust.

Identified on: 4/26/2026

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