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The mineral composition of the magma and the rate at which it cools determines what rock forms.

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13y ago
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11y ago

The mineral composition of the magma, where it was formed (above ground or underground), and whether or not gasses were inside when it solidified.

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11y ago

The type of igneous rock formed depends upon the rate of cooling, the amount of water in the magma, and the chemical composition of the magma.

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14y ago

Rate of cooling and chemistry.

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13y ago

heat and pressure

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Q: What are two factors affect the type of igneous rock that is formed?
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