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Xelga [282]
3 years ago
10

An unknown igneous rock has very small crystals. The rock _____.

Geography
2 answers:
erica [24]3 years ago
5 0
Cooled quickly, because lava cools and crystallizes rapidly
Alexeev081 [22]3 years ago
5 0

The answer would be: The rock cooled quickly.


These types of igneous rocks are called extrusive rocks. These are igneous rocks that cooled on the surface. They form only small crystals because they cool quickly at the surface. Intrusive rocks are its counterpart, they form bigger crystals because they form underground and slowly allowing time for bigger crystals to form.

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