Pink Granite

Physical Properties

Hardness: 6-7 on Mohs scale; Color: Pink, white, and grey; Luster: Dull to vitreous; Crystal structure: Phaneritic (coarse-grained); Specific gravity: 2.63–2.75 g/cm³; Cleavage: Two directions at nearly 90 degrees for feldspar components.

Formation & Geological History

Formed from the slow crystallization of magma below Earth's surface. The pink color comes from potassium feldspar (orthoclase). These rocks are often millions to billions of years old, found in continental crust and mountain ranges.

Uses & Applications

Used widely in construction for countertops, floor tiles, paving stones, and memorial monuments due to its durability and aesthetic appeal.

Geological Facts

Granite makes up a large part of the Earth's continental crust. Iconic landforms like Yosemite's Half Dome and the peaks of the Scottish Highlands are composed primarily of granite. The pink hue specifically indicates a high concentration of orthoclase feldspar.

Field Identification & Locations

Identify in the field by its speckled, interlocking crystalline 'salt and pepper' appearance and its extreme hardness (will scratch glass). It is commonly found in mountainous regions or glacial deposits.

Identified on: 4/25/2026

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