Definition
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster
Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight
Origin
Pennsylvania, U.S.
Southern Alps, France
Discoverer
Unknown
Dolomieu
Etymology
From Greek anthrakites, from anthrax, anthrak meaning coal
From French, from the name of Dolomieu (1750–1801), the French geologist who discovered the rock
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Texture
Amorphous, Glassy
Earthy
Color
Black, Brown, Dark Brown, Grey, Light to Dark Grey
Black, Brown, Green, Grey, Pink, White
Durability
Durable
Durable
Appearance
Veined or Pebbled
Glassy or Pearly
Interior Uses
-
Decorative Aggregates, Homes, Interior Decoration
Exterior Uses
-
Garden Decoration, Office Buildings
Other Architectural Uses
-
-
Construction Industry
Cement Manufacture, for Road Aggregate, Making natural cement, Steel Production
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics, Serves as an Oil and Gas Reservoir rock
Medical Industry
In Chemical and Pharmaceutical Industry, Manufacture of Aspirins
Taken as a Supplement for Calcium or Magnesium
Antiquity Uses
-
Artifacts, Jewellery, Monuments, Sculpture, Small Figurines
Commercial Uses
Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry
An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)
Types
Semi-anthracite and Meta-anthracite
Boninite and Jasperoid
Features
Helps in production of Heat and Electricity, Used as fossil fuel
Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits
Archaeological Significance
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.
Dolomite rocks are originally deposited as calcite or aragonite rich limestone, but during diagenesis process, the calcite or aragonite is transformed into dolomite.
Mineral Content
Calcite, Clay, Clay Minerals
Clay Minerals, Pyrite, Quartz, Sulfides
Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur
NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO
Types of Metamorphism
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism
Grain Size
Medium to Fine Coarse Grained
Medium to Fine Coarse Grained
Fracture
Conchoidal
Conchoidal
Porosity
Less Porous
Less Porous
Luster
Shiny
Vitreous and Pearly
Specific Gravity
1.1-1.4
2.8-3
Transparency
Opaque
Transparent to Translucent
Density
1.25-2.5 g/cm3
2.8-2.9 g/cm3
Resistance
Heat Resistant, Water Resistant
Heat Resistant, Pressure Resistant, Wear Resistant
Deposits in Eastern Continents
Asia
Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam
China, India
Africa
Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania
Morocco, Namibia
Europe
Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom
Austria, Italy, Romania, Spain, Switzerland
Deposits in Western Continents
North America
Canada, Mexico, USA
Mexico, USA
South America
Brazil, Chile, Colombia, Venezuela
Brazil, Colombia
Deposits in Oceania Continent
Australia
New South Wales, Queensland, Victoria
New South Wales, Queensland, Yorke Peninsula
All about Anthracite and Dolomite Properties
Know all about Anthracite and Dolomite properties here. All properties of rocks are important as they define the type of rock and its application. Anthracite belongs to Metamorphic Rocks while Dolomite belongs to Sedimentary Rocks.Texture of Anthracite is Amorphous, Glassy whereas that of Dolomite is Earthy. Anthracite appears Veined or Pebbled and Dolomite appears Glassy or Pearly. The luster of Anthracite is shiny while that of Dolomite is vitreous and pearly. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors whereas Dolomite is available in black, brown, green, grey, pink, white 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 Dolomite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).