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Sagot :
Answer:
Your answer is Gabbro
Explanation:
hopefully this helps if you havent already answered the question
Obsidian is an extrusive Igneous rock that is fine-grained. What igneous rock may have cooled deep beneath the Earth's surface and have a dark blackish-green color? Igneous rocks can be classified as mafic or felsic depending on the amount of aluminum or iron and magnesium they contain.
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