Oil shale

Lignite

Oil shale and Lignite

Oil shale

Lignite

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Definition

Oil Shale is a fine-grained sedimentary rock from which oil is extracted

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

History

Origin

France

Discoverer

Unknown

Etymology

From Old English scealu in its base sense of thing that divides or separate

From French, Latin lignum wood + -ite1

Class

Sedimentary Rocks

Sub-Class

Durable Rock, Soft Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

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

Texture

Splintery

Amorphous, Glassy

Color

Black, Brown, Buff, Green, Grey, Red, Yellow

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

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Muddy

Veined or Pebbled

Uses

Architecture

Interior Uses

Exterior Uses

Other Architectural Uses

Industry

Construction Industry

Cement Manufacture, Construction Aggregate, for Road Aggregate, Serves as an Oil and Gas Reservoir rock

for Road Aggregate, Steel Production

Medical Industry

Antiquity Uses

Artifacts

Other Uses

Commercial Uses

An Oil and Gas Reservoir

Electricity Generation

Types

Carbonate-rich Shale, Siliceous Shale and Cannel Shale

Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite

Features

Easily splits into thin plates, Generally rough to touch, Is one of the oldest rock, Very fine grained rock

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

Present

Formation

Oil Shale forms on the beds of seas and lakes and its formation starts with the organic debris settling and accumulating at the bottom of a lake or sea which are then transformed into rock with the help of high temperature and pressure.

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

Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides

Compound Content

Ca, Fe, Mg, Silicon Dioxide, Sodium

Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Sea Erosion, Water Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

2-31

1 7

👆🏻

Grain Size

Very fine-grained

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

White

Black

Porosity

Highly Porous

Luster

Dull

Dull to Vitreous to Submetallic

Compressive Strength

0.15 450

👆🏻

Cleavage

Slaty

Toughness

2.6

Specific Gravity

2.2-2.81.1-1.4

0 8.4

👆🏻

Transparency

Opaque

Density

2.4-2.8 g/cm³800-801 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.39 kJ/Kg K1.26 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

Bangladesh, China, India, Israel, Jordan, Russia, Syria, Thailand, Turkey

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

Africa

Ethiopia, Kenya, Morocco, South Africa, Tanzania

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

Europe

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Sweden, Switzerland

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

Others

Greenland

Deposits in Western Continents

North America

Canada, USA

Canada, Mexico, USA

South America

Bolivia, Brazil, Chile, Colombia, Ecuador, Peru, Venezuela

Brazil, Chile, Colombia, Venezuela

Deposits in Oceania Continent

Australia

New South Wales, New Zealand, Queensland, Victoria, Western Australia

New South Wales, Queensland, Victoria

All about Oil shale and Lignite Properties

Know all about Oil shale and Lignite properties here. All properties of rocks are important as they define the type of rock and its application. Oil shale and Lignite belong to Sedimentary Rocks.Texture of Oil shale is Splintery whereas that of Lignite is Amorphous, Glassy. Oil shale appears Muddy and Lignite appears Veined or Pebbled. The luster of Oil shale is dull while that of Lignite is dull to vitreous to submetallic. Oil shale is available in black, brown, buff, green, grey, red, yellow colors whereas Lignite is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Oil shale are an oil and gas reservoir and that of Lignite are electricity generation.