Anthracite

Whiteschist

Anthracite and Whiteschist

Anthracite

Whiteschist

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Definition

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

Whiteschist is an uncommon rock type belonging to a class of metamorphic rock, this is formed at high-ultra-high pressures

History

Origin

Pennsylvania, U.S.

Tasmania

Discoverer

Unknown

Etymology

From Greek anthrakites, from anthrax, anthrak meaning coal

From French schiste, Greek skhistos i.e. split

Class

Metamorphic Rocks

Sub-Class

Durable Rock, Soft Rock

Family

Group

Other Categories

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Amorphous, Glassy

Foliated

Color

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

Green, Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Veined or Pebbled

Banded and Foilated

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Exterior Uses

Garden Decoration, Paving Stone

Other Architectural Uses

Curbing

Industry

Construction Industry

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

for Road Aggregate

Medical Industry

In Chemical and Pharmaceutical Industry, Manufacture of Aspirins

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, Production of Lime

Types

Semi-anthracite and Meta-anthracite

Features

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

High percentage of mica, Host Rock for Lead

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

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.

Whiteschist is formed by dynamic metamorphism at high temperatures and pressures that aligns the grains of mica, hornblende and other elongated minerals into thin layers.

Composition

Mineral Content

Calcite, Clay, Clay Minerals

Carbonate, Coesite, Quartz, Silica

Compound Content

Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur

CaO, Mg, MgO, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

1-1.51.5

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Fine to Medium Grained

Fracture

Conchoidal

Streak

Black

White

Porosity

Less Porous

Luster

Shiny

Subvitreous to Dull

Compressive Strength

-200.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

Specific Gravity

1.1-1.42.86

0 8.4

👆🏻

Transparency

Opaque

Density

1.25-2.5 g/cm³2.8-2.9 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

1.32 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Water Resistant

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam

Africa

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

Egypt, Ethiopia, Morocco, Nigeria, South Africa

Europe

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

Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland

Others

Deposits in Western Continents

North America

Canada, Mexico, USA

Canada, Costa Rica, Cuba, Mexico, Panama, USA

South America

Brazil, Chile, Colombia, Venezuela

Brazil, Colombia, Guyana

Deposits in Oceania Continent

Australia

New South Wales, Queensland, Victoria

New South Wales, New Zealand, Queensland

All about Anthracite and Whiteschist Properties

Know all about Anthracite and Whiteschist properties here. All properties of rocks are important as they define the type of rock and its application. Anthracite and Whiteschist belong to Metamorphic Rocks.Texture of Anthracite is Amorphous, Glassy whereas that of Whiteschist is Foliated. Anthracite appears Veined or Pebbled and Whiteschist appears Banded and Foilated. The luster of Anthracite is shiny while that of Whiteschist is subvitreous to dull. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors whereas Whiteschist is available in green, grey, 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 Whiteschist are creating artwork, gemstone, jewelry, production of lime.