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Basalt does have a greater specific gravity. Granite is not as dense as basalt.
Basalt is known as a type of rock. This rock is a dark-colored and fine grained.
Basalt rock is used in construction, such as building blocks, cobblestones, and making statues. It is formed from the rapid cooling of basaltic lava.
partial melting of mantle rocks
Greenschist, blueschist, zeolite, granulite and eclogite high grade metamorphic rocks.