_______ is formed inside the Earth's crust and has large crystals due to slow cooling
A. Pumice
B. Basalt
C. Obsidian
D. Gabbro
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Answer:
Gabbro
Explanation:
Gabbro is a phaneritic, mafic intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma into a holocrystalline mass deep beneath the Earth's surface. Slow-cooling, coarse-grained gabbro is chemically equivalent to rapid-cooling, fine-grained basalt.
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