igneous
Pink Granite
Granite (Felsic Plutonic Rock)
Hardness: 6-7 on Mohs scale. Color: Salmon pink to reddish with gray and white specks. Luster: Dull to vitreous. Crystal Structure: Phaneritic (visible coarse grains). Cleavage: Imperfect. Specific Gravity: 2.63 - 2.75.
- Hardness
- 6-7 on Mohs scale
- Color
- Salmon pink to reddish with gray and white specks
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Salmon pink to reddish with gray and white specks. Luster: Dull to vitreous. Crystal Structure: Phaneritic (visible coarse grains). Cleavage: Imperfect. Specific Gravity: 2.63 - 2.75.
Formation & geological history
Formed through the slow cooling and crystallization of molten magma deep beneath the Earth's surface (intrusive). The pink color is specifically due to a high concentration of Potassium (K-feldspar).
Uses & applications
Extensively used in construction for countertops, floor tiles, monuments, and as crushed stone for road base. Also popular as a landscaping stone and in sculpture.
Geological facts
Granite makes up a large portion of the continental crust. The pink variety is the state rock of several regions, including Missouri and Texas. It is one of the oldest rocks on Earth, dating back billions of years in some cratons.
Field identification & locations
Identify by its interlocking 'salt and pepper' crystalline texture and the presence of quartz and feldspar. Found globally in mountainous regions or where ancient shields are exposed. Look for its resistance to weathering compared to surrounding rock.
