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Greywacke vs Anthracite


Anthracite vs Greywacke


Definition

Definition
Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay   
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster   

History
  
  

Origin
Unknown   
Pennsylvania, U.S.   

Discoverer
Unknown   
Unknown   

Etymology
From German Grauwacke, from grau grey + wacke   
From Greek anthrakites, from anthrax, anthrak meaning coal   

Class
Sedimentary Rocks   
Metamorphic Rocks   

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

Family
  
  

Group
Not Applicable   
Not Applicable   

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

Texture

Texture
Clastic   
Amorphous, Glassy   

Color
Beige, Black, Brown, Colourless, Cream, Dark Brown, Green, Grey, Light Green, Light to Dark Grey, Pink, Red, White, Yellow   
Black, Brown, Dark Brown, Grey, Light to Dark Grey   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
No   

Scratch Resistant
Yes   
No   

Stain Resistant
Yes   
No   

Wind Resistant
Yes   
No   

Acid Resistant
No   
No   

Appearance
Dull   
Veined or Pebbled   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles, Flooring, Homes, Interior Decoration   
Not Yet Used   

Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone   
Not Yet Used   

Other Architectural Uses
Curbing, Whetstones   
Not Yet Used   

Industry
  
  

Construction Industry
Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar   
Cement Manufacture, for Road Aggregate, Making natural cement, Steel Production   

Medical Industry
Not Yet Used   
In Chemical and Pharmaceutical Industry, Manufacture of Aspirins   

Antiquity Uses
Artifacts, Sculpture, Small Figurines   
Not Yet Used   

Other Uses
  
  

Commercial Uses
As armour rock for sea walls, Petroleum reservoirs, Sea Defence, Tombstones   
Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry   

Types

Types
Not Available   
Semi-anthracite and Meta-anthracite   

Features
Available in Lots of Colors and Patterns, Generally rough to touch, Non-vesicular, Veined   
Helps in production of Heat and Electricity, Used as fossil fuel   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Not Yet Used   

Famous Monuments
Not Applicable   
Not Applicable   

Sculpture
Used   
Not Yet Used   

Famous Sculptures
Data Not Available   
Not Applicable   

Pictographs
Not Used   
Used   

Petroglyphs
Not Used   
Used   

Figurines
Used   
Not Yet Used   

Fossils
Present   
Absent   

Formation

Formation
Graywacke rock is a type of sedimentary rock, which is also known as immature sandstone, which is indurated, dark grey and consisting of poorly sorted angular to sub-angular, sand-sized grains.   
Anthracite forms from the accumulation of plant debris in a swamp environment. When plant debris dies and falls into the swamp, the standing water of the swamp protects it from decay.   

Composition
  
  

Mineral Content
Augite, Biotite, Calcite, Chlorite, Clay, Clay Minerals, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz   
Calcite, Clay, Clay Minerals   

Compound Content
Aluminium Oxide, NaCl, CaO, Chromium(III) Oxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide   
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism   

Weathering
Yes   
No   

Types of Weathering
Biological Weathering, Chemical Weathering   
Not Applicable   

Erosion
Yes   
No   

Types of Erosion
Coastal Erosion, Sea Erosion, Wind Erosion   
Not Applicable   

Properties

Physical Properties
  
  

Hardness
6-7   
1-1.5   

Grain Size
Angular and Fine   
Medium to Fine Coarse Grained   

Fracture
Conchoidal   
Conchoidal   

Streak
White   
Black   

Porosity
Highly Porous   
Less Porous   

Luster
Dull   
Shiny   

Cleavage
Perfect   
Non-Existent   

Toughness
2.6   
Not Available   

Specific Gravity
2.2-2.8   
1.1-1.4   

Transparency
Opaque   
Opaque   

Density
2.6-2.61 g/cm3   
1.25-2.5 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
1.32 kJ/Kg K   
4

Resistance
Heat Resistant, Impact Resistant, Pressure Resistant   
Heat Resistant, Water Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan   
Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam   

Africa
Namibia, Nigeria, South Africa   
Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania   

Europe
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom   
Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom   

Others
Greenland   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, USA   
Canada, Mexico, USA   

South America
Brazil   
Brazil, Chile, Colombia, Venezuela   

Deposits in Oceania Continent
  
  

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

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Greywacke vs Anthracite 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 Greywacke and Anthracite Reserves. Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster. 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 Greywacke vs Anthracite information and Greywacke vs Anthracite characteristics in the upcoming sections.

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Greywacke vs Anthracite 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. Greywacke vs Anthracite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Greywacke and Properties of Anthracite. Learn more about Greywacke vs Anthracite in the next section. The interior uses of Greywacke include Decorative aggregates, Floor tiles, Flooring, Homes and Interior decoration whereas the interior uses of Anthracite include Not yet used. Due to some exceptional properties of Greywacke and Anthracite, they have various applications in construction industry. The uses of Greywacke in construction industry include Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate, Raw material for the manufacture of mortar and that of Anthracite include Cement manufacture, For road aggregate, Making natural cement, Steel production.

More about Greywacke and Anthracite

Here you can know more about Greywacke and Anthracite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Greywacke and Anthracite consists of mineral content and compound content. The mineral content of Greywacke includes Augite, Biotite, Calcite, Chlorite, Clay, Clay Minerals, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz and mineral content of Anthracite includes Calcite, Clay, Clay Minerals. You can also check out the list of all Sedimentary Rocks. When we have to compare Greywacke vs Anthracite, the texture, color and appearance plays an important role in determining the type of rock. Greywacke is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas, Anthracite is available in black, brown, dark brown, grey, light to dark grey colors. Appearance of Greywacke is Dull and that of Anthracite is Veined or Pebbled. Properties of rock is another aspect for Greywacke vs Anthracite. The hardness of Greywacke is 6-7 and that of Anthracite is 1-1.5. The types of Greywacke are Not Available whereas types of Anthracite are Semi-anthracite and Meta-anthracite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Greywacke is white while that of Anthracite is black. The specific heat capacity of Greywacke is Not Available and that of Anthracite is 1.32 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Greywacke is heat resistant, impact resistant, pressure resistant whereas Anthracite is heat resistant, water resistant.

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