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23 September, 10:22

5. Describe the three types of magma. Include the silica content and explosivity

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  1. 23 September, 13:25
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    Basaltic magma - - SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na

    Andesitic magma - - SiO2 55-65 wt%, intermediate. in Fe, Mg, Ca, Na, K

    Rhyolitic magma - - SiO2 65-75%, low in Fe, Mg, Ca, high in K, Na
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