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Argillite vs Essexite 


Essexite  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   
Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock   

History
  
  

Origin
Unknown   
USA   

Discoverer
Unknown   
Unknown   

Etymology
From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite   
From the locality in Essex County, Massachusetts,US   

Class
Sedimentary Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture

Texture
Clastic, Polished   
Granular   

Color
Dark Grey to Black, Pink, Red, White   
Dark Grey to Black   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
Yes   

Wind Resistant
Yes   
Yes   

Acid Resistant
Yes   
No   

Appearance
Rough and Dull   
Banded   

Uses

Architecture
  
  

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

Exterior Uses
As Building Stone, Garden Decoration, Office Buildings   
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone   

Other Architectural Uses
Curbing, Whetstones   
Curbing   

Industry
  
  

Construction Industry
Used for flooring, stair treads, borders and window sills.   
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments, Sculpture   
Artifacts, Monuments, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Fire resistant, Used to manufracture paperweights and bookends   
Cemetery Markers, Commemorative Tablets, Jewelry, Sea Defence, Tombstones   

Types

Types
Not Available   
Not Available   

Features
Is one of the oldest rock   
Is one of the oldest rock, Smooth to touch   

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Used   
Used   

Fossils
Present   
Absent   

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.   
Essexite is a type of igneous rock, which is usually dark grey to black plutonic rock. For the formation of essexite, suitable magma with exact composition of K, Ba, Rb, Cs, Sr should be produced.   

Composition
  
  

Mineral Content
Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz   
Augite, Feldspar, Hornblende, Nepheline, Olivine, Plagioclase, Pyroxene   

Compound Content
Iron(III) Oxide, Potassium Oxide, MgO, Silicon Dioxide   
Aluminium Oxide, Ba, Ca, Cs, Potassium, Rb, Sodium, Sr   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism   

Weathering
Yes   
Yes   

Types of Weathering
Biological Weathering   
Biological Weathering, Chemical Weathering   

Erosion
Yes   
Yes   

Types of Erosion
Chemical Erosion   
Coastal Erosion, Glacier Erosion, Water Erosion   

Properties

Physical Properties
  
  

Hardness
2-3   
7   

Grain Size
Fine Grained   
Fine Grained   

Fracture
Conchoidal to Uneven   
Conchoidal   

Streak
White to Grey   
Black   

Porosity
Highly Porous   
Highly Porous   

Luster
Waxy and Dull   
Not Available   

Cleavage
Slaty   
Not Available   

Toughness
2.6   
1.6   

Specific Gravity
2.56-2.68   
Not Available   

Transparency
Opaque   
Opaque   

Density
2.54-2.66 g/cm3   
Not Available   

Thermal Properties
  
  

Specific Heat Capacity
0.87 kJ/Kg K   
14
Not Available   

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Bangladesh, China, India, Russia   
India, Russia   

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

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

Others
Not Yet Found   
Greenland   

Deposits in Western Continents
  
  

North America
USA   
Canada, USA   

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

Deposits in Oceania Continent
  
  

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

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Argillite vs Essexite  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 Essexite  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. Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock. 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 Essexite  information and Argillite vs Essexite  characteristics in the upcoming sections.

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Argillite vs Essexite  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 Essexite  characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Argillite and Properties of Essexite . Learn more about Argillite vs Essexite  in the next section. The interior uses of Argillite include Decorative aggregates, Homes and Interior decoration whereas the interior uses of Essexite  include Decorative aggregates, Homes and Interior decoration. Due to some exceptional properties of Argillite and Essexite , 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 Essexite  include As dimension stone, Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate.

More about Argillite and Essexite 

Here you can know more about Argillite and Essexite . The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Argillite and Essexite  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 Essexite  includes Augite, Feldspar, Hornblende, Nepheline, Olivine, Plagioclase, Pyroxene. You can also check out the list of all Sedimentary Rocks. When we have to compare Argillite vs Essexite , 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, Essexite  is available in dark grey to black colors. Appearance of Argillite is Rough and Dull and that of Essexite  is Banded. Properties of rock is another aspect for Argillite vs Essexite . The hardness of Argillite is 2-3 and that of Essexite  is 7. The types of Argillite are Not Available whereas types of Essexite  are Not Available. 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 Essexite  is black. The specific heat capacity of Argillite is 0.87 kJ/Kg K and that of Essexite  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 Essexite  is impact resistant, pressure resistant, wear resistant.

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