igneous

Pink Granite

Phaneritic Plutonic Felsic Rock

Hardness: 6-7 on Mohs scale; Color: Pink, salmon, or reddish with flecks of white, gray, and black; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained); Cleavage: Perfect in feldspar grains, none in quartz; Specific gravity: 2.63-2.75

Hardness: 6-7 on Mohs scale
Luster: Vitreous to dull

Identified June 2, 2026More igneous →

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Physical properties

Formation & geological history

Formed by the slow crystallization of magma below the Earth's surface (intrusive). The pink color comes from an abundance of potassium feldspar (orthoclase). These rocks are typically hundreds of millions to billions of years old.

Uses & applications

Used extensively in construction for countertops, floor tiles, paving stones, curbing, and monuments. Also popular as a landscaping stone and collector's specimen for teaching rock types.

Geological facts

Granite makes up a large portion of the Earth's continental crust. The iconic pink granite of the Llano Uplift in Texas is approximately 1.1 billion years old. Famous mountains like Yosemite's Half Dome are primarily granite.

Field identification & locations

Identify by its interlocking 'salt and pepper' crystalline texture with visible pink potassium feldspar crystals. It is ubiquitous in mountainous regions and can be found in glacial till across the Northern Hemisphere.

Other igneous specimens

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Granite

Igneous

Granite

Igneous

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

mineral

Dalmatian Jasper

Aplite with Arfvedsonite inclusions

igneous

Magnetite

Iron(II,III) oxide (Fe3O4)

mineral

Dark Igneous Rock (Likely Basalt or Diabase)

Basalt (extrusive igneous rock) or Diabase (intrusive igneous rock - also known as Dolerite), largely composed of plagioclase feldspar, pyroxene (augite), and sometimes olivine and amphibole. Exact mineralogy would require thin section analysis.

Igneous