Pink Granite

Physical Properties

Hardness: 6-7 (Mohs scale); Color: Pink to reddish-orange due to potassium feldspar (orthoclase), translucent quartz, and dark biotite/hornblende; Luster: Vitreous to dull; Structure: Phaneritic (coarse-grained) crystalline.

Formation & Geological History

Formed from the slow cooling of magma deep beneath the Earth's surface (plutonic). The pink hue is caused by a high concentration of potassium-rich feldspar. These formations range from hundreds of millions to billions of years old.

Uses & Applications

Extensively used in construction, countertops, monuments, headstones, and as crushed decorative stone in landscaping. High-quality pieces are prized as architectural cladding.

Geological Facts

Granite makes up a significant portion of the Earth's continental crust. El Capitan in Yosemite National Park is a massive monolith composed of granite. Its durability is so great that it was used to build the Great Pyramids of Giza's inner chambers.

Field Identification & Locations

Check for visible interlocking crystals of quartz and pink feldspar. It will scratch glass but not be scratched by steel. Found worldwide in continental cratons and mountain ranges like the Rockies or Appalachians.

Identified on: 5/2/2026

Mode: Standard