igneous

Pink Granite

Granite (Phaneritic intrusive rock)

Hardness: 6-7 (Mohs scale); Color: Pink, salmon, or peach with black and white mottling; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained); Cleavage: Perfect on feldspar grains; Specific gravity: 2.63-2.75

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

Identified May 16, 2026More igneous →

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Physical properties

Formation & geological history

Formed from the slow cooling and crystallization of felsic magma deep beneath the Earth's surface (plutonic). This specific specimen appears to be water-worn or tumbled, likely sourced from glacial till or riverbeds.

Uses & applications

Widely used in construction for countertops, floor tiles, and monuments. High-quality pink varieties are popular for decorative stonework and cemetery markers.

Geological facts

The pink color is caused by an abundance of potassium feldspar (orthoclase). Granite makes up a large portion of the Earth's continental crust and is one of the hardest natural stones used by humans.

Field identification & locations

Identify by its 'salt and pepper' crystalline texture and the presence of visible pink feldspar, clear/grey quartz, and dark biotite or hornblende grains. Commonly found in batholiths and mountain ranges worldwide.

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