igneous

Pink Granite

Phaneritic intrusive igneous rock (Felsic)

Hardness: 6-7 Mohs; Color: Pink, reddish-orange, grey, and black mottled; Luster: Vitreous to dull; Structure: Phaneritic (coarse-grained); Cleavage: Perfect on feldspar grains; Specific gravity: 2.63-2.75

Hardness: 6-7 Mohs
Color: Pink, reddish-orange, grey, and black mottled
Luster: Vitreous to dull

Identified May 26, 2026More igneous →

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Physical properties

Formation & geological history

Forms from the slow crystallization of silica-rich magma below Earth's surface. Often formed in continental crustal batholiths during orogenic events spanning millions of years (e.g., Precambrian to Cenozoic).

Uses & applications

Widely used in construction, countertops, monuments, floor tiles, and as crushed stone for road base.

Geological facts

The pink color is primarily caused by Potassium Feldspar (Orthoclase). Granite makes up a large portion of the Earth's continental crust. Examples include the peaks of the Sierra Nevada and the Egyptian pyramids.

Field identification & locations

Identify by its interlocking crystalline texture and the presence of pink feldspar, clear quartz, and dark biotite or hornblende. Commonly found in mountainous regions or shield areas like the Canadian Shield.

Other igneous specimens

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Blue Apatite

Fluorapatite (Ca5(PO4)3F)

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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

Dalmatian Jasper

Aplite with Arfvedsonite inclusions

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