Definition
Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
Discoverer
Unknown
Marcus Vitruvius Pollio
Etymology
From French, Latin lignum wood + -ite1
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Group
Not Applicable
Not Applicable
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Texture
Amorphous, Glassy
Banded
Color
Black, Brown, Dark Brown, Grey, Light to Dark Grey
Beige, Black, Blue, Brown, Grey, Red, White, Yellow
Durability
Durable
Durable
Appearance
Veined or Pebbled
Fibrous
Interior Uses
Not Yet Used
Decorative Aggregates, Entryways, Flooring, 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
Construction Industry
for Road Aggregate, Steel Production
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Not Yet Used
Artifacts, Jewellery, Monuments, Sculpture, Small Figurines
Commercial Uses
Electricity Generation
Cemetery Markers, Creating Artwork, Gemstone, Jewelry, Paper Industry, Pottery
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
Stalactites and stalagmites are formed from this rock, Surfaces are often shiny, Very fine grained rock
Archaeological Significance
Monuments
Not Yet Used
Used
Famous Monuments
Not Applicable
Colosseum in Rome, Italy, Sacré Coeur in Paris, France, Trevi Fountain in Rome, Italy
Sculpture
Not Yet Used
Used
Famous Sculptures
Not Applicable
Data Not Available
Figurines
Not Yet Used
Used
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.
Travertine is a type of sedimentary rock formed when a river carries or transports pieces of broken rock which then undergo sedimentation. They are then subjected to high temperature and pressure hence forming travertine rock.
Mineral Content
Not Available
Calcite, Clay, Feldspar, Micas, Quartz
Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur
Ca, NaCl, CaO, Oxygen
Types of Metamorphism
Not Applicable
Not Applicable
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, Glacier Erosion
Grain Size
Medium to Fine Coarse Grained
Fine Grained
Fracture
Conchoidal
Splintery
Porosity
Highly Porous
Highly Porous
Luster
Dull to Vitreous to Submetallic
Dull to Pearly
Compressive Strength
Not Available
Cleavage
Non-Existent
Non-Existent
Toughness
Not Available
1
Specific Gravity
1.1-1.4
1.68
Transparency
Opaque
Opaque
Density
800-801 g/cm3
2.71 g/cm3
Resistance
Heat Resistant
Impact Resistant, Pressure Resistant, Wear Resistant
Deposits in Eastern Continents
Asia
Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam
China, Russia
Africa
Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania
Not Yet Found
Europe
Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom
Austria, Italy, Portugal, United Kingdom
Others
Not Yet Found
Not Yet Found
Deposits in Western Continents
North America
Canada, Mexico, USA
Canada, USA
South America
Brazil, Chile, Colombia, Venezuela
Argentina, Bolivia, Ecuador
Deposits in Oceania Continent
Australia
New South Wales, Queensland, Victoria
Not Yet Found
All about Lignite and Travertine Properties
Know all about Lignite and Travertine properties here. All properties of rocks are important as they define the type of rock and its application. Lignite and Travertine belong to Sedimentary Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Travertine is Banded. Lignite appears Veined or Pebbled and Travertine appears Fibrous. The luster of Lignite is dull to vitreous to submetallic while that of Travertine is dull to pearly. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Travertine is available in beige, black, blue, brown, grey, red, white, yellow colors. The commercial uses of Lignite are electricity generation and that of Travertine are cemetery markers, creating artwork, gemstone, jewelry, paper industry, pottery.