Definition
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
A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles
Origin
European Foreland Basins
European Foreland Basins
Discoverer
Unknown
Arnold H. Bouma
Etymology
From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century)
From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Soft Rock
Group
Not Applicable
Not Applicable
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Opaque Rock
Texture
Clastic
Mud-rich, Sandy
Color
Beige, Buff, Orange
Black, Brown, Colourless, Green, Grey, Pink
Durability
Non-Durable
Durable
Appearance
Layered, Banded, Veined and Shiny
Dull and Banded
Interior Uses
Decorative Aggregates, Homes, Hotels, Interior Decoration
Bathrooms, Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration
Exterior Uses
Garden Decoration, Office Buildings
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration
Other Architectural Uses
Curbing
Curbing
Construction Industry
Building houses or walls, Construction Aggregate
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Monuments, Sculpture
Commercial Uses
Creating Artwork
Cemetery Markers, Creating Artwork
Types
Not Available
Not Available
Features
Available in Lots of Colors and Patterns, Is one of the oldest rock
High silica content, Host Rock for Lead
Archaeological Significance
Famous Monuments
Data Not Available
Data Not Available
Famous Sculptures
Data Not Available
Data Not Available
Formation
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.
Turbidite is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. These particles then settle down and are subjected to high temperature and pressures hence forming Turbidite.
Mineral Content
Apatite, Augite, Bronzite, Calcite, Chert, Chlorite, Clay Minerals, Epidote, Feldspar, Garnet, Micas, Muscovite or Illite
Coesite, Quartz, Sand
Compound Content
CaO, Carbon Dioxide, Iron(III) Oxide, MgO
CaO, Carbon Dioxide, MgO
Types of Metamorphism
Not Applicable
Not Applicable
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Types of Erosion
Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion
Grain Size
Coarse Grained
Fine to Coarse Grained
Fracture
Irregular
Splintery
Streak
White
White, Greenish White or Grey
Porosity
Highly Porous
Very Less Porous
Luster
Dull to Vitreous to Submetallic
Metallic
Compressive Strength
Not Available
Cleavage
Not Available
Disjunctive
Toughness
Not Available
2.4
Specific Gravity
1.10-2.24
2.46-2.73
Transparency
Opaque
Opaque
Density
2.8-2.9 g/cm3
1.6-2.5 g/cm3
Specific Heat Capacity
Not Available
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant
Deposits in Eastern Continents
Asia
Not Yet Found
Not Yet Found
Africa
Not Yet Found
Western Africa
Europe
United Kingdom
Austria, Belarus, Romania, Switzerland, United Kingdom
Others
Not Yet Found
Not Yet Found
Deposits in Western Continents
North America
USA
Canada, USA
South America
Not Yet Found
Brazil, Colombia
Deposits in Oceania Continent
Australia
Not Yet Found
New Zealand, Western Australia
All about Coquina and Turbidite Properties
Know all about Coquina and Turbidite properties here. All properties of rocks are important as they define the type of rock and its application. Coquina and Turbidite belong to Sedimentary Rocks.Texture of Coquina is Clastic whereas that of Turbidite is Mud-rich, Sandy. Coquina appears Layered, Banded, Veined and Shiny and Turbidite appears Dull and Banded. The luster of Coquina is dull to vitreous to submetallic while that of Turbidite is metallic. Coquina is available in beige, buff, orange colors whereas Turbidite is available in black, brown, colourless, green, grey, pink colors. The commercial uses of Coquina are creating artwork and that of Turbidite are cemetery markers, creating artwork.