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Marl and Claystone


Claystone and Marl


Definition

Definition
Marl is an unconsolidated sedimentary rock consisting of clay and lime   
Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From Old French marle, from Late Latin marglia   
From English clay and stone as the rock contains more amount of clay   

Class
Sedimentary Rocks   
Sedimentary Rocks   

Sub-Class
Durable Rock, Soft Rock   
Durable Rock, Medium Hardness Rock   

Family
  
  

Group
Not Applicable   
Not Applicable   

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

Texture

Texture
Earthy   
Clastic   

Color
Beige, Brown, Green, Grey, White   
Black, Blue, Brown, Green, Grey, Orange, Red, White, Yellow   

Maintenance
Less   
More   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
No   
Yes   

Stain Resistant
No   
No   

Wind Resistant
No   
No   

Acid Resistant
No   
No   

Appearance
Rough and Dull   
Rough and Dull   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles   
Decorative Aggregates, Entryways, Floor Tiles, Homes, Interior Decoration   

Exterior Uses
As Building Stone, Roof Tiles   
As Facing Stone, Roof Tiles   

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar   
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   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Jewellery, Sculpture, Small Figurines   
Artifacts, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Creating Artwork, Soil Conditioner   
Pottery   

Types

Types
Clay Marl ,Blue Marl, Red Marl, High Bank Marl, Shell Layer Marl, Under Shell Layer Marl, Sand Marl, Green Marl, Grey Marl and Clayey Marl   
Not Available   

Features
Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock   
Available in Lots of Colors and Patterns, Smooth to touch, Very fine grained rock   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Not Yet Used   

Famous Monuments
Not Applicable   
Not Applicable   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Used   
Used   

Fossils
Present   
Present   

Formation

Formation
Marl forms when very fine-grained clay particles are deposited in water which settles at the bottom of water bodies and are compacted by overlying sediment; the water squeezes out and hence forming Marl rock.   
Claystone is generally quite soft, but can be hard and brittle. It forms due to weathering of mudstone.   

Composition
  
  

Mineral Content
Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz   
Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz   

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

Transformation
  
  

Metamorphism
No   
No   

Types of Metamorphism
Not Applicable   
Not Applicable   

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
2-3   
3.5-4   

Grain Size
Very fine-grained   
Fine Grained   

Fracture
Conchoidal   
Not Available   

Streak
White   
White   

Porosity
Highly Porous   
Very Less Porous   

Luster
Dull   
Dull   

Cleavage
Not Available   
Perfect   

Toughness
2.6   
2.6   

Specific Gravity
2.2-2.8   
0   

Transparency
Opaque   
Opaque   

Density
2.4-2.8 g/cm3   
2-2.9 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.92 kJ/Kg K   
10

Resistance
Heat Resistant, Impact Resistant   
Heat Resistant, Impact Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Pakistan, Russia   
Bangladesh, China, India, Russia   

Africa
Ethiopia, Kenya, Morocco, South Africa   
Ethiopia, Kenya, Morocco, South Africa, Tanzania   

Europe
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland   
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
USA   
Canada, Panama, USA   

South America
Colombia, Ecuador, Peru   
Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela   

Deposits in Oceania Continent
  
  

Australia
New South Wales, Victoria, Western Australia   
New South Wales, New Zealand, Queensland, Victoria, Western Australia   

Summary >>
<< Reserves

All about Marl and Claystone Properties

Know all about Marl and Claystone properties here. All properties of rocks are important as they define the type of rock and its application. Marl and Claystone belong to Sedimentary Rocks.Texture of Marl is Earthy whereas that of Claystone is Clastic. Marl appears Rough and Dull and Claystone appears Rough and Dull. The luster of Marl and Claystone is dull. Marl is available in beige, brown, green, grey, white colors whereas Claystone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Claystone are pottery.

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