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Coquina and Diatomite


Diatomite and Coquina


Definition

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   
Diatomite is a fine-grained sedimentary rock which is formed from consolidated diatomaceous earth   

History
  
  

Origin
European Foreland Basins   
Germany   

Discoverer
Unknown   
Unknown   

Etymology
From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century)   
From diatom + -ite1   

Class
Sedimentary Rocks   
Sedimentary Rocks   

Sub-Class
Durable Rock, Soft Rock   
Durable Rock, Soft Rock   

Family
  
  

Group
Not Applicable   
Not Applicable   

Other Categories
Coarse Grained Rock, Opaque Rock   
Fine Grained Rock, Opaque Rock   

Texture

Texture
Clastic   
Clastic or Non-Clastic   

Color
Beige, Buff, Orange   
Grey, White, Yellow   

Maintenance
More   
Less   

Durability
Non-Durable   
Non-Durable   

Water Resistant
No   
No   

Scratch Resistant
No   
No   

Stain Resistant
No   
No   

Wind Resistant
No   
No   

Acid Resistant
No   
No   

Appearance
Layered, Banded, Veined and Shiny   
Soft   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Homes, Hotels, Interior Decoration   
Decorative Aggregates, Homes, Interior Decoration   

Exterior Uses
Garden Decoration, Office Buildings   
Garden Decoration, Paving Stone   

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
Building houses or walls, Construction Aggregate   
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Source of calcium   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines   
Artifacts   

Other Uses
  
  

Commercial Uses
Creating Artwork   
Alumina Refineries, Animal feed filler, As a Feed Additive for Livestock, Creating Artwork, Drawing on blackboards, Fire resistant, Gymnasts, athletes and mountain climbers use for grip, In aquifers, Soil Conditioner, To ignite fire, Used as a filter medium, Used as an insecticide, Whiting material in toothpaste, paint and paper   

Types

Types
Not Available   
Not Available   

Features
Available in Lots of Colors and Patterns, Is one of the oldest rock   
Clasts are smooth to touch, Is one of the oldest rock, Smooth to touch, Very fine grained rock   

Archaeological Significance
  
  

Monuments
Used   
Not Yet Used   

Famous Monuments
Data Not Available   
Not Applicable   

Sculpture
Used   
Not Yet Used   

Famous Sculptures
Data Not Available   
Not Applicable   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Used   
Not Yet Used   

Fossils
Present   
Present   

Formation

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.   
Diatomite rock formed from the skeletal remains of single celled plants called diatoms. When diatoms die, their skeletal remains sink to the bottom of lakes and oceans etc. hence forming diatomite deposit.   

Composition
  
  

Mineral Content
Apatite, Augite, Bronzite, Calcite, Chert, Chlorite, Clay Minerals, Epidote, Feldspar, Garnet, Micas, Muscovite or Illite   
Calcite, Clay, Clay Minerals, Quartz, Sand   

Compound Content
CaO, Carbon Dioxide, Iron(III) Oxide, MgO   
Ca, NaCl, CaO   

Transformation
  
  

Metamorphism
No   
No   

Types of Metamorphism
Not Applicable   
Not Applicable   

Weathering
Yes   
Yes   

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering   
Biological Weathering, Chemical Weathering, Mechanical Weathering   

Erosion
Yes   
Yes   

Types of Erosion
Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion   
Chemical Erosion, Coastal Erosion, Wind Erosion   

Properties

Physical Properties
  
  

Hardness
1-2   
1   

Grain Size
Coarse Grained   
Very fine-grained   

Fracture
Irregular   
Not Available   

Streak
White   
White   

Porosity
Highly Porous   
Highly Porous   

Luster
Dull to Vitreous to Submetallic   
Dull   

Cleavage
Not Available   
Non-Existent   

Toughness
Not Available   
1   

Specific Gravity
1.10-2.24   
2.3-2.4   

Transparency
Opaque   
Opaque   

Density
2.8-2.9 g/cm3   
2.49-2.51 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.90 kJ/Kg K   
12

Resistance
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant   
Heat Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
Not Yet Found   
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam   

Africa
Not Yet Found   
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe   

Europe
United Kingdom   
England, France, Germany, Spain, United Kingdom   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
USA   
Canada, USA   

South America
Not Yet Found   
Colombia   

Deposits in Oceania Continent
  
  

Australia
Not Yet Found   
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula   

Summary >>
<< Reserves

All about Coquina and Diatomite Properties

Know all about Coquina and Diatomite properties here. All properties of rocks are important as they define the type of rock and its application. Coquina and Diatomite belong to Sedimentary Rocks.Texture of Coquina is Clastic whereas that of Diatomite is Clastic or Non-Clastic. Coquina appears Layered, Banded, Veined and Shiny and Diatomite appears Soft. The luster of Coquina is dull to vitreous to submetallic while that of Diatomite is dull. Coquina is available in beige, buff, orange colors whereas Diatomite is available in grey, white, yellow colors. The commercial uses of Coquina are creating artwork and that of Diatomite are alumina refineries, animal feed filler, as a feed additive for livestock, creating artwork, drawing on blackboards, fire resistant, gymnasts, athletes and mountain climbers use for grip, in aquifers, soil conditioner, to ignite fire, used as a filter medium, used as an insecticide, whiting material in toothpaste, paint and paper.

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