Definition
Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat
A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles
Origin
France
European Foreland Basins
Discoverer
Unknown
Arnold H. Bouma
Etymology
From French, Latin lignum wood + -ite1
From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Soft Rock
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Opaque Rock
Texture
Amorphous, Glassy
Mud-rich, Sandy
Color
Black, Brown, Dark Brown, Grey, Light to Dark Grey
Black, Brown, Green, Grey, Pink
Durability
Durable
Durable
Appearance
Veined or Pebbled
Dull and Banded
Interior Uses
-
Bathrooms, Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration
Exterior Uses
-
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration
Other Architectural Uses
-
Curbing
Construction Industry
for Road Aggregate, Steel Production
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement
Antiquity Uses
-
Artifacts, Monuments, Sculpture
Commercial Uses
Electricity Generation
Cemetery Markers, Creating Artwork
Types
Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite
Sedimentary rock
Features
Generally rough to touch, Helps in production of Heat and Electricity, Used as fossil fuel
High silica content, Host Rock for Lead
Archaeological Significance
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.
Turbidite is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. These particles then settle down and are subjected to high temperature and pressures hence forming Turbidite.
Mineral Content
-
Coesite, Quartz, Sand
Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur
CaO, Carbon Dioxide, MgO
Types of Metamorphism
-
-
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Types of Erosion
Chemical Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion
Grain Size
Medium to Fine Coarse Grained
Fine to Coarse Grained
Fracture
Conchoidal
Splintery
Streak
Black
White, Greenish White or Grey
Porosity
Highly Porous
Very Less Porous
Luster
Dull to Vitreous to Submetallic
Metallic
Specific Gravity
1.1-1.4
2.46-2.73
Transparency
Opaque
Opaque
Density
800-801 g/cm3
1.6-2.5 g/cm3
Resistance
Heat Resistant
Heat Resistant
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
Western Africa
Europe
Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom
Austria, Belarus, Romania, Switzerland, United Kingdom
Deposits in Western Continents
North America
Canada, Mexico, USA
Canada, USA
South America
Brazil, Chile, Colombia, Venezuela
Brazil, Colombia
Deposits in Oceania Continent
Australia
New South Wales, Queensland, Victoria
New Zealand, Western Australia
All about Lignite and Turbidite Properties
Know all about Lignite and Turbidite properties here. All properties of rocks are important as they define the type of rock and its application. Lignite and Turbidite belong to Sedimentary Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Turbidite is Mud-rich, Sandy. Lignite appears Veined or Pebbled and Turbidite appears Dull and Banded. The luster of Lignite is dull to vitreous to submetallic while that of Turbidite is metallic. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Turbidite is available in black, brown, green, grey, pink colors. The commercial uses of Lignite are electricity generation and that of Turbidite are cemetery markers, creating artwork.