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Coquina vs. Limestone — What's the Difference?

Coquina vs. Limestone — What's the Difference?

Difference Between Coquina and Limestone

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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 "cockle" and "shellfish".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.

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).

Coquina

Any of various small marine clams of the genus Donax having variously colored, often striped or banded wedge-shaped shells, and found especially on sandy beaches along the Atlantic coast of the United States.

Limestone

A common sedimentary rock consisting mostly of calcium carbonate, CaCO3, used as a building stone and in the manufacture of lime, carbon dioxide, and cement.

Coquina

A soft porous limestone, composed essentially of fragments of shells and coral, used as a building material.
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Limestone

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.

Coquina

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

Limestone

Pertaining to or made of limestone.

Coquina

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

Limestone

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.

Coquina

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.

Limestone

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

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