igneous

Pink Granite

Granite (Felsic Plutonic Rock)

Hardness: 6-7 Mohs; Color: Pink, reddish-pink, grey, and black speckles; Luster: Dull to vitreous; Crystal Structure: Phaneritic (coarse-grained); Cleavage: Indistinct; Specific Gravity: 2.63–2.75

Hardness: 6-7 Mohs
Color: Pink, reddish-pink, grey, and black speckles
Luster: Dull to vitreous

Identified May 9, 2026More igneous →

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Physical properties

Hardness: 6-7 Mohs; Color: Pink, reddish-pink, grey, and black speckles; Luster: Dull to vitreous; Crystal Structure: Phaneritic (coarse-grained); Cleavage: Indistinct; Specific Gravity: 2.63–2.75

Formation & geological history

Formed through the slow crystallization of silica-rich magma below the Earth's surface. It is a plutonic rock that can be hundreds of millions to billions of years old, often found in the roots of mountain ranges.

Uses & applications

Extensively used in construction for countertops, floor tiles, paving stones, monuments, and as a decorative stone in landscaping and jewelry (cabochons).

Geological facts

The pink color is caused by an abundance of potassium feldspar (orthoclase). Granite makes up much of the Earth's continental crust and is exceptionally durable against erosion.

Field identification & locations

Identify by the interlocking coarse grains of pink feldspar, clear-to-grey quartz, and black mica (biotite). Common in glaciated regions as 'erratics' or in batholiths like those in Scotland, Brazil, or the USA.

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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