igneous

Pink Granite

Phaneritic Plutonic Felsic Rock (K-feldspar rich)

Hardness: 6-7 (Mohs scale); Color: Pink, salmon, or peach-red mixed with gray and black; Luster: Vitreous to dull; Structure: Phaneritic (coarse-grained) crystalline texture; Cleavage: Prefect in two directions (feldspar minerals); Specific gravity: 2.63 - 2.75

Hardness: 6-7 (Mohs scale)
Color: Pink, salmon, or peach-red mixed with gray and black
Luster: Vitreous to dull

Identified March 20, 2026More igneous →

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Physical properties

Formation & geological history

Formed through the slow cooling and crystallization of molten magma beneath the Earth's surface (intrusive). The pink color is caused by an abundance of Potassium Feldspar (Orthoclase). Can be millions to billions of years old, often found in continental crustal shields.

Uses & applications

Widely used in construction for countertops, floor tiles, and monuments. It is popular in architectural curbing and as gravel for decorative landscaping. Higher quality slabs are used for polished memorials.

Geological facts

Granite makes up a large portion of the Earth's continental crust. Yosemite National Park's famous rock formations, like Half Dome and El Capitan, are composed of similar granitic plutons. The pinker the granite, the higher the orthoclase feldspar content.

Field identification & locations

Identify in the field by its 'salt and pepper' look with distinct pink crystalline blocks of feldspar, clear glassy quartz, and dark specks of biotite or hornblende. It is extremely common in mountainous regions like the Rockies, Appalachians, and the Canadian Shield.

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

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

mineral

Blue Apatite

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

mineral

Magnetite

Magnetite (Fe3O4)

mineral