Coal and Peridotite

Coal

Peridotite

Definition

Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds

Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle

History

Origin

USA

Pike County, U.S

Discoverer

John Peter Salley

Unknown

Etymology

From the Old English term col, which has meant mineral of fossilized carbon since the 13th century

From French, from peridot +‎ -ite

Class

Sedimentary 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

Amorphous, Glassy

Phaneritic

Color

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

Dark Greenish - Grey

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Veined or Pebbled

Rough and Shiny

Uses

Architecture

Interior Uses

Not Yet Used

Decorative Aggregates, Interior Decoration

Exterior Uses

Not Yet Used

As Building Stone, As Facing Stone, Garden Decoration

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

Not Yet Used

Antiquity Uses

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

Peat, Lignite, Sub-Bituminous Coal, Bituminous Coal, Anthracite, Graphite

Dunite, Wehrlite, Harzburgite, Lherzolite and Pyrolite

Features

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

Constitutes upper part of the Earth's mantle, Generally rough to touch, Host rock for Diamond, 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

Not Used

Used

Petroglyphs

Not Used

Used

Figurines

Not Yet Used

Used

Fossils

Present

Absent

Formation

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.

Peridotites can be formed in two ways: as mantle rocks formed during the accretion and differentiation of the Earth or as cumulate rocks formed by precipitation of olivine and pyroxenes from basaltic magmas.

Composition

Mineral Content

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

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

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

Yes

Types of Weathering

Not Applicable

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

Not Applicable

Chemical 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

Luster

Dull to Vitreous to Submetallic

Shiny

Compressive Strength

Not Available

107.55 N/mm²

Cleavage

Non-Existent

Imperfect

Toughness

Not Available

2.1

Specific Gravity

1.1-1.4

3-3.01

Transparency

Opaque

Translucent to Opaque

Density

1100-1400 g/cm³

3.1-3.4 g/cm³

Thermal Properties

Specific Heat Capacity

1.32 kJ/Kg K

1.26 kJ/Kg K

Resistance

Heat 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

China, India, Indonesia, Kazakhstan, Russia, South Korea, Thailand, Turkey

Africa

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

Morocco, South Africa

Europe

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

Finland, France, Georgia, Germany, Great Britain, Italy, Kazakhstan, Netherlands, Norway, Spain, Switzerland, Venezuela

Others

Not Yet Found

Deposits in Western Continents

North America

Canada, Mexico, USA

Canada, USA

South America

Brazil, Chile, Colombia, Venezuela

Brazil

Deposits in Oceania Continent

Australia

New South Wales, Queensland, Victoria

New Zealand, Western Australia

Summary >>

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All about Coal and Peridotite Properties

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