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Anthracite Rock



Definition

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

History

Origin
Pennsylvania, U.S.

Discoverer
Unknown

Etymology
From Greek anthrakites, from anthrax, anthrak meaning coal

Class
Metamorphic Rocks

Sub-Class
Durable Rock, Soft Rock

Family

Group
-

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

Texture

Texture
Amorphous, Glassy

Color
Black, Brown, Dark Brown, Grey, Light to Dark Grey

Maintenance
Less

Durability
Durable

Water Resistant
No

Scratch Resistant
No

Stain Resistant
No

Wind Resistant
No

Acid Resistant
No

Appearance
Veined or Pebbled

Uses

Architecture

Interior Uses
-

Exterior Uses
-

Other Architectural Uses
-

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
-

Other Uses

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

Types

Types
Semi-anthracite and Meta-anthracite

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

Archaeological Significance

Monuments
-

Famous Monuments
-

Sculpture
-

Famous Sculptures
-

Pictographs
-

Petroglyphs
-

Figurines
-

Fossils
Absent

Formation

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

Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur

Transformation

Metamorphism
Yes

Types of Metamorphism
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering
No

Types of Weathering
-

Erosion
No

Types of Erosion
-

Properties

Physical Properties

Hardness
1-1.5

Grain Size
Medium to Fine Coarse Grained

Fracture
Conchoidal

Streak
Black

Porosity
Less Porous

Luster
Shiny

Compressive Strength
-

Cleavage
-

Toughness
-

Specific Gravity
1.1-1.4

Transparency
Opaque

Density
1.25-2.5 g/cm3

Thermal Properties

Specific Heat Capacity
1.32 kJ/Kg K 4

Resistance
Heat Resistant, Water Resistant

Reserves

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
-

Deposits in Western Continents

North America
Canada, Mexico, USA

South America
Brazil, Chile, Colombia, Venezuela

Deposits in Oceania Continent

Australia
New South Wales, Queensland, Victoria

Definition >>
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Metamorphic Rocks

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.

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