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Gabbro is a name originally bestowed by the Italians to a type of serpentine, but the term is now generally utilized to describe a coarsely grained igneous rock chemically equivalent to basalt. Widely distributed on Earth and the moon, gabbro is sometimes mined in quarries for use in the building industry, but is much more valuable as a source of copper, nickel, cobalt, platinum, and iron ores.
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