Home
Compare Rocks


Anthracite and Harzburgite


Harzburgite and Anthracite


Definition

Definition
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster   
Harzburgite is a plutonic rock of the peridotite group consisting largely of orthopyroxene and olivine   

History
  
  

Origin
Pennsylvania, U.S.   
Germany   

Discoverer
Unknown   
Unknown   

Etymology
From Greek anthrakites, from anthrax, anthrak meaning coal   
From the name of a town in Harzburg, Germany   

Class
Metamorphic Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Soft Rock   
Durable Rock, Medium Hardness Rock   

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture

Texture
Amorphous, Glassy   
Phaneritic   

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

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
Yes   

Scratch Resistant
No   
Yes   

Stain Resistant
No   
Yes   

Wind Resistant
No   
Yes   

Acid Resistant
No   
No   

Appearance
Veined or Pebbled   
Rough and Shiny   

Uses

Architecture
  
  

Interior Uses
Not Yet Used   
Decorative Aggregates, Homes, Interior Decoration   

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

Other Architectural Uses
Not Yet Used   
Curbing   

Industry
  
  

Construction Industry
Cement Manufacture, for Road Aggregate, Making natural cement, Steel Production   
As Dimension Stone, Cobblestones   

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

Antiquity Uses
Not Yet Used   
Artifacts, Monuments, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry   
Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds   

Types

Types
Semi-anthracite and Meta-anthracite   
Not Available   

Features
Helps in production of Heat and Electricity, Used as fossil fuel   
Constitutes upper part of the Earth's mantle, Generally rough to touch, Is one of the oldest rock   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Used   

Famous Monuments
Not Applicable   
Data Not Available   

Sculpture
Not Yet Used   
Used   

Famous Sculptures
Not Applicable   
Data Not Available   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Not Yet Used   
Used   

Fossils
Absent   
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.   
Harzburgite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.   

Composition
  
  

Mineral Content
Calcite, Clay, Clay Minerals   
Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene   

Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur   
Ca, Fe, Mg, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide   

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism   
Impact Metamorphism   

Weathering
No   
Yes   

Types of Weathering
Not Applicable   
Chemical Weathering, Mechanical Weathering   

Erosion
No   
Yes   

Types of Erosion
Not Applicable   
Chemical Erosion, Sea Erosion   

Properties

Physical Properties
  
  

Hardness
1-1.5   
5.5-6   

Grain Size
Medium to Fine Coarse Grained   
Coarse Grained   

Fracture
Conchoidal   
Irregular   

Streak
Black   
White   

Porosity
Less Porous   
Less Porous   

Luster
Shiny   
Shiny   

Cleavage
Non-Existent   
Imperfect   

Toughness
Not Available   
2.1   

Specific Gravity
1.1-1.4   
3-3.01   

Transparency
Opaque   
Translucent to Opaque   

Density
1.25-2.5 g/cm3   
3.1-3.4 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
1.32 kJ/Kg K   
4
1.25 kJ/Kg K   
6

Resistance
Heat Resistant, Water Resistant   
Heat Resistant, Pressure Resistant, Wear Resistant   

Reserves

Deposits in Eastern Continents
  
  

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

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

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

Others
Not Yet Found   
Hawaii Islands, Mid-Atlantic Ridge   

Deposits in Western Continents
  
  

North America
Canada, Mexico, USA   
Canada, USA   

South America
Brazil, Chile, Colombia, Venezuela   
Not Yet Found   

Deposits in Oceania Continent
  
  

Australia
New South Wales, Queensland, Victoria   
Not Yet Found   

Summary >>
<< Reserves

All about Anthracite and Harzburgite Properties

Know all about Anthracite and Harzburgite properties here. All properties of rocks are important as they define the type of rock and its application. Anthracite belongs to Metamorphic Rocks while Harzburgite belongs to Igneous Rocks.Texture of Anthracite is Amorphous, Glassy whereas that of Harzburgite is Phaneritic. Anthracite appears Veined or Pebbled and Harzburgite appears Rough and Shiny. The luster of Anthracite and Harzburgite is shiny. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors whereas Harzburgite is available in dark greenish - grey colors. The commercial uses of Anthracite are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry and that of Harzburgite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.

Compare Metamorphic Rocks

Metamorphic Rocks

Metamorphic Rocks

» More Metamorphic Rocks

Compare Metamorphic Rocks

» More Compare Metamorphic Rocks