igneous
Pink Granite
Phaneritic Plutonic Intrusive Rock (Granite)
Hardness: 6-7 Mohs; Color: Pink, reddish-white, grey, and black speckles; Luster: Vitreous to dull; Crystal structure: Phaneritic (medium-to-coarse grained); Minerals: Orthoclase feldspar, quartz, and minor mica/amphibole.
- Hardness
- 6-7 Mohs
- Color
- Pink, reddish-white, grey, and black speckles
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 Mohs; Color: Pink, reddish-white, grey, and black speckles; Luster: Vitreous to dull; Crystal structure: Phaneritic (medium-to-coarse grained); Minerals: Orthoclase feldspar, quartz, and minor mica/amphibole.
Formation & geological history
Formed from the slow cooling of silica-rich magma deep underground. This allows large crystals to grow. Most granite formations range from the Precambrian to Cenozoic eras.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, monuments, and as aggregate for roads and rail ballast.
Geological facts
The pink color is due to a high concentration of potassium (orthoclase) feldspar. Granite makes up a significant portion of the Earth's continental crust and is incredibly durable, lasting thousands of years.
Field identification & locations
Identify by its 'salt and pepper' appearance with visible interlocking crystals. Look for its pinkish hue and hardness (it cannot be scratched by a steel blade). Common in planetary shields and mountain ranges.
