ROCK CATEGORY Crossword Clue

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Crossword Puzzle Infos
The rock category of IGNEOUS refers to rocks that are formed from the cooling and solidification of magma or lava. IGNEOUS rocks are classified according to their mineral composition and texture. They are further divided into intrusive and extrusive rocks, depending on how they were formed. Intrusive rocks form when magma cools slowly beneath the surface of the Earth, while extrusive rocks form when lava cools quickly at the surface.
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