igneous

Pink Granite

Phaneritic intrusive igneous rock (high Potassium-Feldspar)

Hardness: 6-7 (Mohs scale), Color: Pink or reddish-pink with gray and black specks, Luster: Vitreous to dull, Crystal Structure: Coarse-grained (phaneritic), Cleavage: Perfect on feldspar grains, Specific Gravity: 2.63-2.75

Identified May 23, 2026More igneous →

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Physical properties

Formation & geological history

Formed by the slow crystallization of magma below Earth's surface. The pink color is due to a high concentration of potassium feldspar (orthoclase). Granite forms in continental crust during orogenic (mountain-building) events.

Uses & applications

Extensively used in construction for countertops, floor tiles, paving stones, and monuments. It is also used as crushed stone for road base and aggregate.

Geological facts

Granite is one of the hardest and most durable natural stones. The pink variety gets its hue from the oxidation of iron within the potassium feldspar minerals. It makes up a large portion of the Earth's continental crust.

Field identification & locations

Identify by its interlocking coarse grains and distinct pink to salmon color. It should contain visible quartz (resembling translucent glass) and dark minerals like biotite or hornblende. Commonly found in mountainous regions or shield areas.

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