What is the difference between a granite and basalt?
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Basalt and granite actually have quite a bit in common. Both are igneous rocks, which means that they cooled from a magma (the earth gets very hot just below the surface, and there is lots of liquid rock available). Both are made up of minerals from the silicates group, so both have large amounts of silicon and oxygen.
DIFFERENCE
Granite is less dense than basalt mainly because granite is made up of lighter mass minerals like quartz and feldspars without much in the way of heavier mass, weightier mafic minerals like pyroxenes and hornblende. Granites may have biotite or other micas, and might have a little hornblende - but not very much.
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Basalt and granite actually have quite a bit in common. Both are igneous rocks, which means that they cooled from a magma (the earth gets very hot just below the surface, and there is lots of liquid rock available). Both are made up of minerals from the silicates group, so both have large amounts of silicon and oxygen.
DIFFERENCE
Granite is less dense than basalt mainly because granite is made up of lighter mass minerals like quartz and feldspars without much in the way of heavier mass, weightier mafic minerals like pyroxenes and hornblende. Granites may have biotite or other micas, and might have a little hornblende - but not very much.
HOPE IT HELPS YOU
FOLLOW ME FOR ANY OTHER QUESTIONS
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• Basalt is mostly found on ocean floors, while granite is the crust of earth in all continents.
• Basalt is extrusive, while granite is intrusive igneous rock.
• Basalt is darker and is composed of magnesium and iron, whereas granite is lighter and is made up of feldspar and quartz.
• Basalt is called mafic, while granite is called felsic.
• Basalt splits along columnar planes, while granite splits along horizontal planes.
• Basalt is mostly found on ocean floors, while granite is the crust of earth in all continents.
• Basalt is extrusive, while granite is intrusive igneous rock.
• Basalt is darker and is composed of magnesium and iron, whereas granite is lighter and is made up of feldspar and quartz.
• Basalt is called mafic, while granite is called felsic.
• Basalt splits along columnar planes, while granite splits along horizontal planes.
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