Lignite

Serpentinite

Lignite and Serpentinite

Lignite

Serpentinite

Add ⊕

Definition

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

A hydration and metamorphic transformation of ultramafic rock from the Earth's mantle is called as serpentinization, a group of minerals is formed by serpentinization compose rock 'serpentinite'.

History

Origin

France

USA

Discoverer

Unknown

Etymology

From French, Latin lignum wood + -ite1

From English word serpentinization.

Class

Sedimentary Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Soft Rock

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

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

Fine Grained Rock, Opaque Rock

Texture

Amorphous, Glassy

Earthy

Color

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

Black, Brown, Green, Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Veined or Pebbled

Rough and Dull

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Exterior Uses

As Building Stone, Paving Stone, Garden Decoration, Office Buildings

Other Architectural Uses

Curbing

Industry

Construction Industry

for Road Aggregate, Steel Production

As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement

Medical Industry

Antiquity Uses

Artifacts, Jewellery, Monuments, Sculpture

Other Uses

Commercial Uses

Electricity Generation

Commemorative Tablets, Creating Artwork

Types

Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite

Jadeitite

Features

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

Host Rock for Lead

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

Absent

Formation

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.

Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Serpentinite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

Composition

Mineral Content

Carbonate, Magnetite, Pyrrhotite, Serpentine, Sulfides

Compound Content

Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur

Ca, CaO, Carbon Dioxide, KCl, MgO, Sulfur Dioxide, Sulphur

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

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

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

13-5

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Very fine-grained

Fracture

Conchoidal

Uneven

Streak

Black

White, Greenish White or Grey

Porosity

Highly Porous

Less Porous

Luster

Dull to Vitreous to Submetallic

Waxy and Dull

Compressive Strength

-310.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

1.1-1.42.79-3

0 8.4

👆🏻

Transparency

Opaque

Density

800-801 g/cm³2.5-3 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

1.26 kJ/Kg K0.95 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

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

India, Saudi Arabia, Singapore, South Korea

Africa

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

Ethiopia, Western Africa

Europe

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

England, Georgia, Switzerland, United Kingdom

Others

Deposits in Western Continents

North America

Canada, Mexico, USA

Canada

South America

Brazil, Chile, Colombia, Venezuela

Colombia

Deposits in Oceania Continent

Australia

New South Wales, Queensland, Victoria

Central Australia, New South Wales, New Zealand, Western Australia

All about Lignite and Serpentinite Properties

Know all about Lignite and Serpentinite properties here. All properties of rocks are important as they define the type of rock and its application. Lignite belongs to Sedimentary Rocks while Serpentinite belongs to Metamorphic Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Serpentinite is Earthy. Lignite appears Veined or Pebbled and Serpentinite appears Rough and Dull. The luster of Lignite is dull to vitreous to submetallic while that of Serpentinite is waxy and dull. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Serpentinite is available in black, brown, green, grey, white colors. The commercial uses of Lignite are electricity generation and that of Serpentinite are commemorative tablets, creating artwork.