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Argillite vs Marl


Marl vs Argillite


Definition

Definition
Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate   
Marl is an unconsolidated sedimentary rock consisting of clay and lime   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite   
From Old French marle, from Late Latin marglia   

Class
Sedimentary Rocks   
Sedimentary Rocks   

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

Family
  
  

Group
Not Applicable   
Not Applicable   

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

Texture

Texture
Clastic, Polished   
Earthy   

Color
Dark Grey to Black, Pink, Red, White   
Beige, Brown, Green, Grey, White   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
Yes   

Scratch Resistant
Yes   
No   

Stain Resistant
Yes   
No   

Wind Resistant
Yes   
No   

Acid Resistant
Yes   
No   

Appearance
Rough and Dull   
Rough and Dull   

Uses

Architecture
  
  

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

Exterior Uses
As Building Stone, Garden Decoration, Office Buildings   
As Building Stone, Roof Tiles   

Other Architectural Uses
Curbing, Whetstones   
Curbing   

Industry
  
  

Construction Industry
Used for flooring, stair treads, borders and window sills.   
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, Monuments, Sculpture   
Artifacts, Jewellery, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Fire resistant, Used to manufracture paperweights and bookends   
Creating Artwork, Soil Conditioner   

Types

Types
Not Available   
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   

Features
Is one of the oldest rock   
Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock   

Archaeological Significance
  
  

Monuments
Used   
Not Yet Used   

Famous Monuments
Data Not Available   
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
An argillite is a fine-grained sedimentary rock mainly composed of clay particles which forms from lithified muds which contain variable amounts of silt-sized particles.   
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.   

Composition
  
  

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

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

Transformation
  
  

Metamorphism
No   
No   

Types of Metamorphism
Not Applicable   
Not Applicable   

Weathering
Yes   
Yes   

Types of Weathering
Biological Weathering   
Biological Weathering, Chemical Weathering   

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
2-3   
2-3   

Grain Size
Fine Grained   
Very fine-grained   

Fracture
Conchoidal to Uneven   
Conchoidal   

Streak
White to Grey   
White   

Porosity
Highly Porous   
Highly Porous   

Luster
Waxy and Dull   
Dull   

Cleavage
Slaty   
Not Available   

Toughness
2.6   
2.6   

Specific Gravity
2.56-2.68   
2.2-2.8   

Transparency
Opaque   
Opaque   

Density
2.54-2.66 g/cm3   
2.4-2.8 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.87 kJ/Kg K   
14
Not Available   

Resistance
Heat Resistant, Impact Resistant   
Heat Resistant, Impact Resistant   

Reserves

Deposits in Eastern Continents
  
  

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

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

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   
USA   

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

Deposits in Oceania Continent
  
  

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

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Argillite vs Marl Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Argillite and Marl Reserves. Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate. Marl is an unconsolidated sedimentary rock consisting of clay and lime. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Argillite vs Marl information and Argillite vs Marl characteristics in the upcoming sections.

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Argillite vs Marl Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Argillite vs Marl characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Argillite and Properties of Marl. Learn more about Argillite vs Marl in the next section. The interior uses of Argillite include Decorative aggregates, Homes and Interior decoration whereas the interior uses of Marl include Decorative aggregates and Floor tiles. Due to some exceptional properties of Argillite and Marl, they have various applications in construction industry. The uses of Argillite in construction industry include Used for flooring, stair treads, borders and window sills. and that of Marl include Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar.

More about Argillite and Marl

Here you can know more about Argillite and Marl. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Argillite and Marl consists of mineral content and compound content. The mineral content of Argillite includes Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz and mineral content of Marl includes Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz. You can also check out the list of all Sedimentary Rocks. When we have to compare Argillite vs Marl, the texture, color and appearance plays an important role in determining the type of rock. Argillite is available in dark grey to black, pink, red, white colors whereas, Marl is available in beige, brown, green, grey, white colors. Appearance of Argillite is Rough and Dull and that of Marl is Rough and Dull. Properties of rock is another aspect for Argillite vs Marl. Hardness of Argillite and Marl is 2-3. The types of Argillite are Not Available whereas types of Marl are 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. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Argillite is white to grey while that of Marl is white. The specific heat capacity of Argillite is 0.87 kJ/Kg K and that of Marl is Not Available. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Argillite is heat resistant, impact resistant whereas Marl is heat resistant, impact resistant.

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