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4 June, 22:42

What are the characteristics of an extrusive rock

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  1. 4 June, 23:59
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    Extrusive Rocks. Igneous rocks which form by the crystallization of magma at the surface of the Earth are called extrusive rocks. They are characterized by fine-grained textures because their rapid cooling at or near the surface did not provide enough time for large crystals to grow.
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