igneous

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)

Hardness: 6-7 on Mohs scale; Color: Pink, salmon, or peach tones with inclusions of black and white; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained, visible crystals); Specific gravity: 2.63 - 2.75.

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

Identified April 4, 2026More igneous →

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Physical properties

Formation & geological history

Formed through the slow crystallization of silica-rich magma beneath the Earth's surface (intrusive). The pink color is generally attributed to an abundance of potassium feldspar (orthoclase).

Uses & applications

Extensively used in construction for countertops, floor tiles, and monuments. Also popular as crushed stone and as an ornamental landscaping rock.

Geological facts

Granite makes up a large portion of the Earth's continental crust. Pikes Peak in Colorado and the granite peaks of the Yosemite Valley are famous examples of massive granite formations.

Field identification & locations

Identify in the field by its coarse, interlocking crystalline texture where individual minerals like salmon-pink feldspar and clear/grey quartz are visible. Look for a 'salt and pepper' appearance with pink highlights.

Other igneous specimens

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Blue Apatite

Fluorapatite (Ca5(PO4)3F)

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

Magnetite

Iron(II,III) oxide (Fe3O4)

mineral

Blue Apatite

Apatite (Group), Ca5(PO4)3(F,Cl,OH)

mineral

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

mineral

Magnetite

Magnetite (Fe3O4)

mineral