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 molluscs, trilobites, brachiopods, or other invertebrates
From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century)
Coarse Grained Rock, Opaque Rock
Layered, Banded, Veined and Shiny
Decorative Aggregates, Homes, Hotels, Interior Decoration
Garden Decoration, Office Buildings
Building houses or walls, Construction Aggregate
Artifacts, Monuments, Sculpture, Small Figurines
Available in Lots of Colors and Patterns, Is one of the oldest rock
Archaeological Significance
Coquina is a sedimentary rock which is formed when billions of small clam-like seashell, called Coquina, or cockleshell are die and hence are deposited, buried and turns into a rock when pressure is applied.
Apatite, Augite, Bronzite, Calcite, Chert, Chlorite, Clay Minerals, Epidote, Feldspar, Garnet, Micas, Muscovite or Illite
CaO, Carbon Dioxide, Iron(III) Oxide, MgO
Biological Weathering, Chemical Weathering, Mechanical Weathering
Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion
Dull to Vitreous to Submetallic
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
Deposits in Eastern Continents
Deposits in Western Continents
Deposits in Oceania Continent
Learn more about Properties of Coquina
What is Coquina? In this section, we will learn more about properties of Coquina i.e. physical and thermal properties. Physical properties of Coquina include Color, Streak, Hardness, Structure, Cleavage, Fracture, Luster, Specific Gravity etc. The strength of Coquina is -. Streak of Coquina is white while its cleavage is . Luster of Coquina is dull to vitreous to submetallic and its fracture is irregular. Coquina is opaque in nature. Know all about Coquina, What is Coquina, its composition, features, facts and reserves in next sections.
Know about Composition of Coquina
What is Coquina composed of? Get to know about composition of Coquina here. Coquina definition gives information about the Formation of Coquina and its composition.The composition of Coquina can be further divided into mineral and compound content. The mineral content of Coquina rock includes Apatite, Augite, Bronzite, Calcite, Chert, Chlorite, Clay Minerals, Epidote, Feldspar, Garnet, Micas, Muscovite or Illite and The compound content of Coquina rock includes CaO, Carbon Dioxide, Iron(III) Oxide, MgO. Almost all rocks undergo transformation process. Know all about Coquina rock in next section.