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Fine textured rocks have a type of grain referred to as aphanitic. This means that its grain is so tiny that it cannot be seen with the naked eye.

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10y ago
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5mo ago

Fine textured rocks have a fine-grained or aphanitic texture, meaning that their mineral crystals are too small to be visible to the naked eye. This texture forms when the rock cools quickly, preventing large mineral crystals from growing. Fine-grained rocks often have a smooth, uniform appearance.

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Q: Fine textured rocks have what kind of grain?
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