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Anthracite Rock

Types of Soft Rocks

Coal
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Chalk
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Mudstone
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Anthracite Definition

Definition
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster

History of Anthracite

Origin
Pennsylvania, U.S.
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Discoverer
Unknown

Etymology
From Greek anthrakites, from anthrax, anthrak meaning coal

Class
Metamorphic Rocks
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Sub-Class
Durable Rock, Soft Rock
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Anthracite Family

Group
Not Applicable

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

Anthracite Texture

Texture
Amorphous, Glassy
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Anthracite Color
Black, Brown, Dark Brown, Grey, Light to Dark Grey

Maintenance
Less
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Durability
Durable

Water Resistant
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Scratch Resistant
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Stain Resistant
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Wind Resistant
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Acid Resistant
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Appearance
Veined or Pebbled
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Anthracite Uses

Architecture

Interior Uses
Not Yet Used
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Exterior Uses
Not Yet Used
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Other Architectural Uses
Not Yet Used

Industry

Construction Industry
Cement Manufacture, for Road Aggregate, Making natural cement, Steel Production

Medical Industry
In Chemical and Pharmaceutical Industry, Manufacture of Aspirins

Antiquity Uses
Not Yet Used
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Other Uses

Commercial Uses
Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry
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Anthracite Types

Types
Semi-anthracite and Meta-anthracite

Features
Helps in production of Heat and Electricity, Used as fossil fuel
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Archaeological Significance of Anthracite

Monuments
Not Yet Used

Famous Monuments
Not Applicable

Sculpture
Not Yet Used

Famous Sculptures
Not Applicable

Pictographs
Used

Petroglyphs
Used

Figurines
Not Yet Used

Fossils
Absent

Formation of Anthracite

Formation
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
Calcite, Clay, Clay Minerals
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Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur
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Transformation

Metamorphism

Types of Metamorphism
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

Types of Weathering
Not Applicable

Erosion

Types of Erosion
Not Applicable

Properties of Anthracite

Physical Properties of Anthracite

Hardness
1-1.5

Grain Size
Medium to Fine Coarse Grained
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Fracture
Conchoidal
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Streak
Black
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Porosity
Less Porous
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Luster
Shiny
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Compressive Strength
Not Available
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Cleavage
Non-Existent
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Toughness
Not Available

Specific Gravity
1.1-1.4

Transparency
Opaque
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Density
1.25-2.5 g/cm3

Thermal Properties of Anthracite

Specific Heat Capacity
1.32 kJ/Kg K
4
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Resistance
Heat Resistant, Water Resistant
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Anthracite Reserves

Anthracite Deposits in Eastern Continents

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

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

Europe
Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom

Others
Not Yet Found

Anthracite Deposits in Western Continents

North America
Canada, Mexico, USA

South America
Brazil, Chile, Colombia, Venezuela

Anthracite Deposits in Oceania Continent

Australia
New South Wales, Queensland, Victoria

Information about Anthracite

Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Anthracite Uses. We have provided you with all information about Anthracite rock here. Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Anthracite is black. Get to know more about Anthracite rock and characteristics of Anthracite rock in the next sections.

Characteristics of Anthracite

Many rocks have distinct characteristics. Some of the Properties of Anthracite are hardness, structure, streak, fracture etc. Anthracite is significant as it is composed of minerals and has variety of uses in our day to day life. The characteristics of Anthracite plays an important role in its identification. The hardness of Anthracite is 1-1.5 on Moh’s hardness scale. Rocks according to their hardness are divided into:Hard Rocks, Soft Rocks and Rocks with Medium Hardness. Fracture of Anthracite rock is conchoidal. Its specific heat capacity is 1.32 kJ/Kg K. Anthracite is heat resistant, water resistant. Some of its uses are:

  • Interior Uses: Not yet used.
  • Construction Industry: Cement manufacture, For road aggregate, Making natural cement, Steel production.

Know more about Anthracite rock in the next section.

More About Anthracite

Anthracite is a type of Metamorphic Rocks. The color of rock is one of its important property. Anthracite rock is available in black, brown, dark brown, grey, light to dark grey colors. It is Veined or Pebbled in appearance. The Anthracite mineral content includes Calcite, Clay, Clay Minerals. Its compound content includes Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur. Let’s move on to the types of Anthracite. The types of Anthracite include Semi-anthracite and Meta-anthracite. Fossils are the remains of prehistoric plants or animals which are embedded in rock and preserved in petrified form. Fossils are found only in sedimentary rocks. As Anthracite belongs to Metamorphic Rocks, fossils are not found in it.