Anthracite

Lignite

Anthracite vs Lignite

Anthracite

Lignite

Add ⊕

Definition

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

Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat

History

Origin

Pennsylvania, U.S.

France

Discoverer

Unknown

Etymology

From Greek anthrakites, from anthrax, anthrak meaning coal

From French, Latin lignum wood + -ite1

Class

Metamorphic Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Soft Rock

Family

Group

Other Categories

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

Texture

Amorphous, Glassy

Color

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

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Veined or Pebbled

Uses

Architecture

Interior Uses

Exterior Uses

Other Architectural Uses

Industry

Construction Industry

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

for Road Aggregate, Steel Production

Medical Industry

In Chemical and Pharmaceutical Industry, Manufacture of Aspirins

Antiquity Uses

Other Uses

Commercial Uses

Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry

Electricity Generation

Types

Semi-anthracite and Meta-anthracite

Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite

Features

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

Generally rough to touch, Helps in production of Heat and Electricity, Used as fossil fuel

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

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.

Coal formation takes place due to accumulation of plant debris in a swamp environment. The Coal formation process continues, as peat turns into lignite brown or black coal at increasing heat and pressure.

Composition

Mineral Content

Calcite, Clay, Clay Minerals

Compound Content

Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur

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, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

1-1.51

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

Black

Porosity

Less Porous

Highly Porous

Luster

Shiny

Dull to Vitreous to Submetallic

Compressive Strength

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

1.1-1.41.1-1.4

0 8.4

👆🏻

Transparency

Opaque

Density

1.25-2.5 g/cm³800-801 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

1.32 kJ/Kg K1.26 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

Africa

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

Europe

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

Canada, Mexico, USA

South America

Brazil, Chile, Colombia, Venezuela

Deposits in Oceania Continent

Australia

New South Wales, Queensland, Victoria

Anthracite vs Lignite 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 Anthracite and Lignite Reserves. Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster. Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat. 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 Anthracite vs Lignite information and Anthracite vs Lignite characteristics in the upcoming sections.

Compare Metamorphic Rocks » More

Anthracite vs Granulite

Anthracite vs Gossan

Anthracite vs Cataclasite

» More Compare Metamorphic Rocks

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

More about Anthracite and Lignite

Here you can know more about Anthracite and Lignite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Anthracite and Lignite consists of mineral content and compound content. The mineral content of Anthracite includes Calcite, Clay, Clay Minerals and mineral content of Lignite includes . You can also check out the list of all Metamorphic Rocks. When we have to compare Anthracite vs Lignite, the texture, color and appearance plays an important role in determining the type of rock. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors whereas, Lignite is available in black, brown, dark brown, grey, light to dark grey colors. Appearance of Anthracite is Veined or Pebbled and that of Lignite is Veined or Pebbled. Properties of rock is another aspect for Anthracite vs Lignite. The hardness of Anthracite is 1-1.5 and that of Lignite is 1. The types of Anthracite are Semi-anthracite and Meta-anthracite whereas types of Lignite are Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Anthracite and Lignite is black. The specific heat capacity of Anthracite is 1.32 kJ/Kg K and that of Lignite is 1.26 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Anthracite is heat resistant, water resistant whereas Lignite is heat resistant.