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Coquina
Clastic or detrital limestone that contains a high proportion of coarse shell debris cemented by calcium carbonate. — A Dictionary of Geology and Earth Sciences (4 ed.), Oxford University Press
size: around 6 cm
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Clastic or detrital limestone that contains a high proportion of coarse shell debris cemented by calcium carbonate. — A Dictionary of Geology and Earth Sciences (4 ed.), Oxford University Press