igneous

Pink Granite

Felsic intrusive igneous rock

Hardness: 6-7 (Mohs); Color: Pink to reddish with white/grey/black specks; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained); Specific Gravity: 2.63 - 2.75

Hardness: 6-7 (Mohs)
Color: Pink to reddish with white/grey/black specks
Luster: Dull to vitreous

Identified April 8, 2026More igneous →

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Physical properties

Hardness: 6-7 (Mohs); Color: Pink to reddish with white/grey/black specks; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained); Specific Gravity: 2.63 - 2.75

Formation & geological history

Formed through the slow crystallization of magma below Earth's surface. High in potassium feldspar (orthoclase), which provides the pink hue. These rocks can date back billions of years depending on the continental craton they belong to.

Uses & applications

Extensively used in construction for countertops, floor tiles, paving stones, curbing, monuments, and as crushed stone for aggregate.

Geological facts

Pink granite is the state rock of New Hampshire and constitutes most of the mass of the Egyptian pyramids' inner chambers. The pink color is specifically due to a high abundance of potassium-rich feldspar.

Field identification & locations

Identify in the field by its visible interlocking crystals of pink feldspar, clear quartz, and dark minerals like mica. It is common in riverbeds and mountainous glaciated regions.

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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