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Coquina vs. Limestone

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Coquinanoun

(countable) Any of several small marine clams, of the species Donax variabilis, common in United States coastal waters.

Limestonenoun

An abundant rock of marine and fresh-water sediments; primarily composed of calcite (CaCO3); it occurs in a variety of forms, both crystalline and amorphous.

Coquinanoun

A soft form of limestone made of fragments of shells, sometimes used as a building or road paving material.

Limestoneadjective

Made of or with limestone.

Coquinanoun

A soft, whitish, coral-like stone, formed of broken shells and corals, found in the southern United States, and used for roadbeds and for building material, as in the fort at St. Augustine, Florida.

Limestonenoun

A rock consisting chiefly of calcium carbonate or carbonate of lime. It sometimes contains also magnesium carbonate, and is then called magnesian or dolomitic limestone. Crystalline limestone is called marble.

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Coquina

Coquina () is a sedimentary rock that is composed either wholly or almost entirely of the transported, abraded, and mechanically sorted fragments of the shells of mollusks, trilobites, brachiopods, or other invertebrates. The term coquina comes from the Spanish word for and .For a sediment to be considered to be a coquina, the particles composing it should average 2 mm (0.079 in) or greater in size.

‘cockle’; ‘shellfish’;

Limestonenoun

a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals

Limestone

Limestone is a common type of carbonate sedimentary rock. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3).

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