igneous

Pink Granite

Potassium Feldspar-Rich Granite

Hardness: 6-7 on Mohs scale. Color: Pinkish-red to salmon due to orthoclase feldspar, with specks of grey quartz and black biotite or hornblende. Luster: Vitreous to dull. Phaneritic (coarse-grained) texture.

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

Identified May 22, 2026More igneous →

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Physical properties

Formation & geological history

Formed from the slow crystallization of molten magma beneath the Earth's surface. This allows large mineral crystals to grow. Most granites date from the Precambrian era to the Cretaceous.

Uses & applications

Extensively used in construction for countertops, floor tiles, paving stones, and monuments. Also a popular specimen for educational Geology collections.

Geological facts

Granite makes up much of the Earth's continental crust. Its pink color is specifically due to a high concentration of Potassium Feldspar, distinguishing it from white or grey granites.

Field identification & locations

Identify by its interlocking crystalline texture and lack of layering. Found in continental mountain ranges and shields globally, such as the Colorado Rockies or the Scottish Highlands.

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