Mafic rocks, which are rich in magnesium and iron, typically have a fine-grained texture due to their rapid cooling, often resulting in smaller crystals. However, in some cases, such as with certain intrusive mafic rocks like gabbro, larger crystals can form due to slower cooling within the Earth's crust. Overall, while mafic rocks can have large crystals in specific contexts, they generally do not exhibit this characteristic.
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