Lab 4

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Rocks that cool slowly have ______ crystals.

large

What textures are possible in extrusive rocks?

Aphanitic

What textures are possible in extrusive rocks?

Aphanitic, Glassy, & Vesicular

Which of the following are mafic minerals?

Pyroxene & Olivine

Rocks formed from volcanic eruptions are an example of extrusive igneous rocks.

True

Rocks that cool quickly have ______ crystals.

small


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