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Lignite and Greenschist


Greenschist and Lignite


Definition

Definition
Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat   
Greenschist is a metamorphic rock that is formed under lowest temperatures and pressures and is usually produced by regional metamorphism   

History
  
  

Origin
France   
Unknown   

Discoverer
Unknown   
Unknown   

Etymology
From French, Latin lignum wood + -ite1   
From minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpentine which are green in color   

Class
Sedimentary Rocks   
Metamorphic Rocks   

Sub-Class
Durable Rock, Soft Rock   
Durable Rock, Medium Hardness Rock   

Family
  
  

Group
Not Applicable   
Not Applicable   

Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock   
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock   

Texture

Texture
Amorphous, Glassy   
Foliated, Platy   

Color
Black, Brown, Dark Brown, Grey, Light to Dark Grey   
Dark Greenish - Grey, Green   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
Yes   

Scratch Resistant
No   
Yes   

Stain Resistant
No   
No   

Wind Resistant
No   
No   

Acid Resistant
No   
No   

Appearance
Veined or Pebbled   
Layered and Shiny   

Uses

Architecture
  
  

Interior Uses
Not Yet Used   
Bathrooms, Countertops, Decorative Aggregates, Entryways, Homes, Interior Decoration   

Exterior Uses
Not Yet Used   
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings   

Other Architectural Uses
Not Yet Used   
Curbing   

Industry
  
  

Construction Industry
for Road Aggregate, Steel Production   
As Dimension Stone, Building houses or walls, Cement Manufacture, Cutting Tool, for Road Aggregate, Roadstone   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Not Yet Used   
Artifacts   

Other Uses
  
  

Commercial Uses
Electricity Generation   
Blackboards, Manufacture of tools, Writing Slates   

Types

Types
Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite   
Not Available   

Features
Generally rough to touch, Helps in production of Heat and Electricity, Used as fossil fuel   
Easily splits into thin plates, Smooth to touch   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Not Yet Used   

Famous Monuments
Not Applicable   
Not Applicable   

Sculpture
Not Yet Used   
Not Yet Used   

Famous Sculptures
Not Applicable   
Not Applicable   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Not Yet Used   
Not Yet Used   

Fossils
Present   
Absent   

Formation

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.   
Greenschist is medium grade metamorphic rock, formed by the metamorphosis of mudstone or shale, or some types of igneous rock, when it is subjected to higher temperatures and pressures.   

Composition
  
  

Mineral Content
Not Available   
Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Serpentine, Sillimanite, Staurolite, Talc   

Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur   
CaO, Carbon Dioxide, MgO   

Transformation
  
  

Metamorphism
No   
No   

Types of Metamorphism
Not Applicable   
Not Applicable   

Weathering
Yes   
Yes   

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering   
Biological Weathering, Chemical Weathering   

Erosion
Yes   
Yes   

Types of Erosion
Chemical Erosion, Water Erosion, Wind Erosion   
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion   

Properties

Physical Properties
  
  

Hardness
1   
3.5-4   

Grain Size
Medium to Fine Coarse Grained   
Medium to Fine Coarse Grained   

Fracture
Conchoidal   
Conchoidal   

Streak
Black   
White   

Porosity
Highly Porous   
Highly Porous   

Luster
Dull to Vitreous to Submetallic   
Shiny   

Cleavage
Non-Existent   
Slaty   

Toughness
Not Available   
1.5   

Specific Gravity
1.1-1.4   
2.5-2.9   

Transparency
Opaque   
Opaque   

Density
800-801 g/cm3   
2.8-2.9 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
1.26 kJ/Kg K   
5
Not Available   

Resistance
Heat Resistant   
Impact Resistant, Pressure Resistant, Water 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
Not Yet Found   
Not Yet Found   

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   

Summary >>
<< Reserves

All about Lignite and Greenschist Properties

Know all about Lignite and Greenschist properties here. All properties of rocks are important as they define the type of rock and its application. Lignite belongs to Sedimentary Rocks while Greenschist belongs to Metamorphic Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Greenschist is Foliated, Platy. Lignite appears Veined or Pebbled and Greenschist appears Layered and Shiny. The luster of Lignite is dull to vitreous to submetallic while that of Greenschist is shiny. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Greenschist is available in dark greenish - grey, green colors. The commercial uses of Lignite are electricity generation and that of Greenschist are blackboards, manufacture of tools, writing slates.

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