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Coquina and Limestone are very similar. In fact, Coquina IS a type of limestone. Coquina is a very strong and sturdy rock. It was used by Spanish soliders to buid Fort Castillo de San Marcos located in Saint Augustine, Florida. It is also commonly formed of mostly seashells. Limestone has seashells and fossils in it.

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Coquina is a sedimentary rock composed of loosely cemented shells and shell fragments, while limestone is a sedimentary rock made up primarily of calcite and aragonite minerals. Limestone is typically harder and more dense than coquina, which is softer and more porous due to its shell content.

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9mo ago
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Q: What is the difference between coquina and limestone?
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