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Lignite and Epidosite


Epidosite and Lignite


Definition

Definition
Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat  
Epidosite is a highly altered epidote and quartz bearing rock which is a type of metasomatite, essentially altered basalt  

History
  
  

Origin
France  
-  

Discoverer
Unknown  
Unknown  

Etymology
From French, Latin lignum wood + -ite1  
-  

Class
Sedimentary Rocks  
Igneous Rocks  

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

Family
  
  

Group
-  
Volcanic  

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

Texture

Texture
Amorphous, Glassy  
Glassy, Massive, Porphyritic, Scoriaceous, Vesicular  

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

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
No  
Yes  

Scratch Resistant
No  
Yes  

Stain Resistant
No  
Yes  

Wind Resistant
No  
Yes  

Acid Resistant
No  
No  

Appearance
Veined or Pebbled  
Dull and Soft  

Uses

Architecture
  
  

Interior Uses
-  
Decorative Aggregates, Floor Tiles, Homes, Hotels, Interior Decoration  

Exterior Uses
-  
As Facing Stone, Garden Decoration, Office Buildings, Paving Stone  

Other Architectural Uses
-  
Curbing  

Industry
  
  

Construction Industry
for Road Aggregate, Steel Production  
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone  

Medical Industry
-  
-  

Antiquity Uses
-  
Artifacts, Monuments, Sculpture, Small Figurines  

Other Uses
  
  

Commercial Uses
Electricity Generation  
Commemorative Tablets, Creating Artwork  

Types

Types
Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite  
Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite  

Features
Generally rough to touch, Helps in production of Heat and Electricity, Used as fossil fuel  
Has High structural resistance against erosion and climate, Very fine grained rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

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.  
Epidosite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.  

Composition
  
  

Mineral Content
-  
Olivine, Plagioclase, Pyroxene  

Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur  
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide  

Transformation
  
  

Metamorphism
No  
Yes  

Types of Metamorphism
-  
Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism  

Weathering
Yes  
Yes  

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

Erosion
Yes  
No  

Types of Erosion
Chemical Erosion, Water Erosion, Wind Erosion  
-  

Properties

Physical Properties
  
  

Hardness
1  
6  

Grain Size
Medium to Fine Coarse Grained  
Fine to Coarse Grained  

Fracture
Conchoidal  
Conchoidal  

Streak
Black  
White to Grey  

Porosity
Highly Porous  
Less Porous  

Luster
Dull to Vitreous to Submetallic  
-  

Compressive Strength
-  
160.00 N/mm2  
21

Cleavage
-  
-  

Toughness
-  
2.3  

Specific Gravity
1.1-1.4  
2.8-3  

Transparency
Opaque  
Opaque  

Density
800-801 g/cm3  
-9999 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
1.26 kJ/Kg K  
5
0.84 kJ/Kg K  
15

Resistance
Heat Resistant  
Heat Resistant, Pressure Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

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

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

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

Others
-  
-  

Deposits in Western Continents
  
  

North America
Canada, Mexico, USA  
Canada, USA  

South America
Brazil, Chile, Colombia, Venezuela  
Brazil  

Deposits in Oceania Continent
  
  

Australia
New South Wales, Queensland, Victoria  
-  

Summary >>
<< Reserves

All about Lignite and Epidosite Properties

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

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