1 Definition
1.1 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
Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay
1.2 History
1.2.1 Origin
European Foreland Basins
Unknown
1.2.2 Discoverer
1.3 Etymology
From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century)
From English clay and stone as the rock contains more amount of clay
1.4 Class
Sedimentary Rocks
Sedimentary Rocks
1.4.1 Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Not Applicable
Not Applicable
1.6 Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
2 Texture
2.1 Texture
2.2 Color
Beige, Buff, Orange
Black, Blue, Brown, Green, Grey, Orange, Red, White, Yellow
2.3 Maintenance
2.4 Durability
2.4.1 Water Resistant
2.4.2 Scratch Resistant
2.4.3 Stain Resistant
2.4.4 Wind Resistant
2.4.5 Acid Resistant
1.1 Appearance
Layered, Banded, Veined and Shiny
Rough and Dull
2 Uses
2.1 Architecture
2.1.1 Interior Uses
Decorative Aggregates, Homes, Hotels, Interior Decoration
Decorative Aggregates, Entryways, Floor Tiles, Homes, Interior Decoration
2.2.2 Exterior Uses
Garden Decoration, Office Buildings
As Facing Stone, Roof Tiles
2.2.3 Other Architectural Uses
2.3 Industry
2.3.1 Construction Industry
Building houses or walls, Construction Aggregate
As a Sintering Agent in Steel Industry to process Iron Ore, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar
2.4.1 Medical Industry
Not Yet Used
Not Yet Used
2.5 Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Sculpture, Small Figurines
2.6 Other Uses
2.6.1 Commercial Uses
3 Types
3.1 Types
Not Available
Not Available
3.2 Features
Available in Lots of Colors and Patterns, Is one of the oldest rock
Available in Lots of Colors and Patterns, Smooth to touch, Very fine grained rock
3.3 Archaeological Significance
3.3.1 Monuments
3.3.3 Famous Monuments
Data Not Available
Not Applicable
3.3.5 Sculpture
3.3.6 Famous Sculptures
Data Not Available
Data Not Available
3.3.8 Pictographs
3.3.9 Petroglyphs
3.3.10 Figurines
3.4 Fossils
4 Formation
4.1 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.
Claystone is generally quite soft, but can be hard and brittle. It forms due to weathering of mudstone.
4.2 Composition
4.2.1 Mineral Content
Apatite, Augite, Bronzite, Calcite, Chert, Chlorite, Clay Minerals, Epidote, Feldspar, Garnet, Micas, Muscovite or Illite
Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz
4.2.2 Compound Content
CaO, Carbon Dioxide, Iron(III) Oxide, MgO
Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, MgO, Silicon Dioxide
4.3 Transformation
4.3.1 Metamorphism
4.3.2 Types of Metamorphism
Not Applicable
Not Applicable
4.3.3 Weathering
4.3.4 Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
4.3.5 Erosion
4.3.6 Types of Erosion
Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion
Coastal Erosion, Water Erosion
5 Properties
5.1 Physical Properties
5.1.1 Hardness
5.1.2 Grain Size
Coarse Grained
Fine Grained
5.1.3 Fracture
5.1.4 Streak
5.1.5 Porosity
Highly Porous
Very Less Porous
5.1.6 Luster
Dull to Vitreous to Submetallic
Dull
5.1.7 Compressive Strength
5.1.8 Cleavage
5.1.9 Toughness
5.1.10 Specific Gravity
5.1.11 Transparency
5.1.12 Density
2.8-2.9 g/cm32-2.9 g/cm3
0
1400
5.2 Thermal Properties
5.2.1 Specific Heat Capacity
5.2.2 Resistance
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Impact Resistant
6 Reserves
6.1 Deposits in Eastern Continents
6.1.1 Asia
Not Yet Found
Bangladesh, China, India, Russia
6.1.2 Africa
Not Yet Found
Ethiopia, Kenya, Morocco, South Africa, Tanzania
6.1.3 Europe
United Kingdom
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
6.1.4 Others
Not Yet Found
Not Yet Found
6.2 Deposits in Western Continents
6.2.1 North America
6.2.2 South America
Not Yet Found
Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
6.3 Deposits in Oceania Continent
6.3.1 Australia
Not Yet Found
New South Wales, New Zealand, Queensland, Victoria, Western Australia