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Pyroclasts can be formed of any type of magma. However, they are more likely to form with andesitic than basaltic magma. Rhyolitic magma will also readily form pyroclasts.

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Q: Are pyroclasts formed by basaltic magma or andesitic magma?
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Is basaltic or andesitic magma hotter?

Basaltic magma is hotter than andesitic magma.


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The three main types of magma are basaltic magma, andesitic magma, and rhyolitic magma. They are classified according to their mineral composition. Basaltic magma is composed of SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na. Andesitic magma is composed of SiO2 55-65 wt%, intermediate. in Fe, Mg, Ca, Na, K. Rhyolitic magma is composed of SiO2 65-75%, low in Fe, Mg, Ca, high in K, Na.


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