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Dolomite
Dolomite

Coal
Coal



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Dolomite vs Coal

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Definition

Definition

Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds

History

Origin

Southern Alps, France
USA

Discoverer

Dolomieu
John Peter Salley

Etymology

From French, from the name of Dolomieu (1750–1801), the French geologist who discovered the rock
From the Old English term col, which has meant mineral of fossilized carbon since the 13th century

Class

Sedimentary Rocks
Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock

Family

Group

-
-

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

Texture

Earthy
Amorphous, Glassy

Color

Black, Brown, Green, Grey, Pink, White
Black, Brown, Dark Brown, Grey, Light to Dark Grey

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Glassy or Pearly
Veined or Pebbled

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration
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Exterior Uses

Garden Decoration, Office Buildings
-

Other Architectural Uses

-
-

Industry

Construction Industry

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

Medical Industry

Taken as a Supplement for Calcium or Magnesium
-

Antiquity Uses

Artifacts, Jewellery, Monuments, Sculpture, Small Figurines
Artifacts

Other Uses

Commercial Uses

An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)
Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry

Types

Types

Boninite and Jasperoid
Peat, Lignite, Sub-Bituminous Coal, Bituminous Coal, Anthracite, Graphite

Features

Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits
Helps in production of Heat and Electricity, Used as fossil fuel

Archaeological Significance

Monuments

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Famous Monuments

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Sculpture

-
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Famous Sculptures

-
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Pictographs

-
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Petroglyphs

-
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Figurines

-
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Fossils

Present
Present

Formation

Formation

Dolomite rocks are originally deposited as calcite or aragonite rich limestone, but during diagenesis process, the calcite or aragonite is transformed into dolomite.
Coal forms from the accumulation of plant debris in a swamp environment which is buried by sediments such as mud or sand and then compacted to form coal.

Composition

Mineral Content

Clay Minerals, Pyrite, Quartz, Sulfides
Analcime, Apatite, Barite, Calcite, Chalcopyrite, Chlorite, Chromite, Clausthalite, Clay Minerals, Crandallite Group, Dolomite, Feldspar, Galena, Gypsum, Marcasite, Muscovite or Illite, Pyrite, Quartz, Siderite, Sphalerite, Zircon

Compound Content

NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur

Transformation

Metamorphism

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism

Weathering

Types of Weathering

-
-

Erosion

Types of Erosion

-
-

Properties

Physical Properties

Hardness

3.5-41-1.5
1 7
👆🏻

Grain Size

Medium to Fine Coarse Grained
Medium to Fine Coarse Grained

Fracture

Conchoidal
Conchoidal

Streak

White
Black

Porosity

Less Porous
Less Porous

Luster

Vitreous and Pearly
Dull to Vitreous to Submetallic

Compressive Strength

140.00 N/mm2-
0.15 450
👆🏻

Cleavage

Perfect
-

Toughness

1
-

Specific Gravity

2.8-31.1-1.4
0 8.4
👆🏻

Transparency

Transparent to Translucent
Opaque

Density

2.8-2.9 g/cm31100-1400 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K1.32 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant
Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Africa

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

Europe

Austria, Italy, Romania, Spain, Switzerland
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

Mexico, USA
Canada, Mexico, USA

South America

Brazil, Colombia
Brazil, Chile, Colombia, Venezuela

Deposits in Oceania Continent

Australia

New South Wales, Queensland, Yorke Peninsula
New South Wales, Queensland, Victoria

Dolomite vs Coal 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 Dolomite and Coal Reserves. Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight. Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds. 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 Dolomite vs Coal information and Dolomite vs Coal characteristics in the upcoming sections.

Dolomite vs Coal 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. Dolomite vs Coal characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Dolomite and Properties of Coal. Learn more about Dolomite vs Coal in the next section. The interior uses of Dolomite include Decorative aggregates, Homes and Interior decoration whereas the interior uses of Coal include . Due to some exceptional properties of Dolomite and Coal, they have various applications in construction industry. The uses of Dolomite in construction industry include 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 and that of Coal include Cement manufacture, For road aggregate, Making natural cement, Steel production.

More about Dolomite and Coal

Here you can know more about Dolomite and Coal. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Dolomite and Coal consists of mineral content and compound content. The mineral content of Dolomite includes Clay Minerals, Pyrite, Quartz, Sulfides and mineral content of Coal includes Analcime, Apatite, Barite, Calcite, Chalcopyrite, Chlorite, Chromite, Clausthalite, Clay Minerals, Crandallite Group, Dolomite, Feldspar, Galena, Gypsum, Marcasite, Muscovite or Illite, Pyrite, Quartz, Siderite, Sphalerite, Zircon. You can also check out the list of all Sedimentary Rocks. When we have to compare Dolomite vs Coal, the texture, color and appearance plays an important role in determining the type of rock. Dolomite is available in black, brown, green, grey, pink, white colors whereas, Coal is available in black, brown, dark brown, grey, light to dark grey colors. Appearance of Dolomite is Glassy or Pearly and that of Coal is Veined or Pebbled. Properties of rock is another aspect for Dolomite vs Coal. The hardness of Dolomite is 3.5-4 and that of Coal is 1-1.5. The types of Dolomite are Boninite and Jasperoid whereas types of Coal are Peat, Lignite, Sub-Bituminous Coal, Bituminous Coal, Anthracite, Graphite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Dolomite is white while that of Coal is black. The specific heat capacity of Dolomite is 0.92 kJ/Kg K and that of Coal 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.Dolomite is heat resistant, pressure resistant, wear resistant whereas Coal is heat resistant.