Definition
Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat
Harzburgite is a plutonic rock of the peridotite group consisting largely of orthopyroxene and olivine
Discoverer
Unknown
Unknown
Etymology
From French, Latin lignum wood + -ite1
From the name of a town in Harzburg, Germany
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Group
Not Applicable
Plutonic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock
Texture
Amorphous, Glassy
Phaneritic
Color
Black, Brown, Dark Brown, Grey, Light to Dark Grey
Dark Greenish - Grey
Durability
Durable
Durable
Appearance
Veined or Pebbled
Rough and Shiny
Interior Uses
Not Yet Used
Decorative Aggregates, Homes, Interior Decoration
Exterior Uses
Not Yet Used
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
Other Architectural Uses
Not Yet Used
Curbing
Construction Industry
for Road Aggregate, Steel Production
As Dimension Stone, Cobblestones
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Not Yet Used
Artifacts, Monuments, Sculpture, Small Figurines
Commercial Uses
Electricity Generation
Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds
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
Constitutes upper part of the Earth's mantle, Generally rough to touch, Is one of the oldest rock
Archaeological Significance
Monuments
Not Yet Used
Used
Famous Monuments
Not Applicable
Data Not Available
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.
Harzburgite 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.
Mineral Content
Not Available
Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene
Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur
Ca, Fe, Mg, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide
Types of Metamorphism
Not Applicable
Impact Metamorphism
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Chemical Weathering, Mechanical Weathering
Types of Erosion
Chemical Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Sea Erosion
Grain Size
Medium to Fine Coarse Grained
Coarse Grained
Fracture
Conchoidal
Irregular
Porosity
Highly Porous
Less Porous
Luster
Dull to Vitreous to Submetallic
Shiny
Cleavage
Non-Existent
Imperfect
Toughness
Not Available
2.1
Specific Gravity
1.1-1.4
3-3.01
Transparency
Opaque
Translucent to Opaque
Density
800-801 g/cm3
3.1-3.4 g/cm3
Resistance
Heat Resistant
Heat Resistant, Pressure Resistant, Wear Resistant
Deposits in Eastern Continents
Asia
Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam
Japan, Oman
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
France, Germany, Italy, Venezuela
Others
Not Yet Found
Hawaii Islands, Mid-Atlantic Ridge
Deposits in Western Continents
North America
Canada, Mexico, USA
Canada, USA
South America
Brazil, Chile, Colombia, Venezuela
Not Yet Found
Deposits in Oceania Continent
Australia
New South Wales, Queensland, Victoria
Not Yet Found
Lignite vs Harzburgite Characteristics
Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Lignite vs Harzburgite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Lignite and Properties of Harzburgite. Learn more about Lignite vs Harzburgite in the next section. The interior uses of Lignite include Not yet used whereas the interior uses of Harzburgite include Decorative aggregates, Homes and Interior decoration. Due to some exceptional properties of Lignite and Harzburgite, they have various applications in construction industry. The uses of Lignite in construction industry include For road aggregate, Steel production and that of Harzburgite include As dimension stone, Cobblestones.
More about Lignite and Harzburgite
Here you can know more about Lignite and Harzburgite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Lignite and Harzburgite consists of mineral content and compound content. The mineral content of Lignite is not available and mineral content of Harzburgite includes Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene. You can also check out the list of all Sedimentary Rocks. When we have to compare Lignite vs Harzburgite, the texture, color and appearance plays an important role in determining the type of rock. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas, Harzburgite is available in dark greenish - grey colors. Appearance of Lignite is Veined or Pebbled and that of Harzburgite is Rough and Shiny. Properties of rock is another aspect for Lignite vs Harzburgite. The hardness of Lignite is 1 and that of Harzburgite is 5.5-6. The types of Lignite are Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite whereas types of Harzburgite are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Lignite is black while that of Harzburgite is white. The specific heat capacity of Lignite is 1.26 kJ/Kg K and that of Harzburgite is 1.25 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Lignite is heat resistant whereas Harzburgite is heat resistant, pressure resistant, wear resistant.