Definition
Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).
  
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster
  
History
  
  
Origin
Brazil
  
Pennsylvania, U.S.
  
Discoverer
Unknown
  
Unknown
  
Etymology
from French néphéline, from Greek nephelē
  
From Greek anthrakites, from anthrax, anthrak meaning coal
  
Class
Igneous Rocks
  
Metamorphic Rocks
  
Sub-Class
Durable Rock, Hard Rock
  
Durable Rock, Soft Rock
  
Family
  
  
Group
Plutonic
  
Not Applicable
  
Other Categories
Fine Grained Rock, Opaque Rock
  
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
  
Texture
Aphanitic
  
Amorphous, Glassy
  
Color
Black, Brown, Colourless, Green, Grey, White
  
Black, Brown, Dark Brown, Grey, Light to Dark Grey
  
Maintenance
Less
  
Less
  
Durability
Durable
  
Durable
  
Water Resistant
Yes
  
No
  
Scratch Resistant
Yes
  
No
  
Stain Resistant
Yes
  
No
  
Wind Resistant
Yes
  
No
  
Acid Resistant
Yes
  
No
  
Appearance
Skeletal
  
Veined or Pebbled
  
Architecture
  
  
Interior Uses
Decorative Aggregates, Homes, Interior Decoration
  
Not Yet Used
  
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
  
Not Yet Used
  
Other Architectural Uses
Curbing
  
Not Yet Used
  
Industry
  
  
Construction Industry
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate
  
Cement Manufacture, for Road Aggregate, Making natural cement, Steel Production
  
Medical Industry
Not Yet Used
  
In Chemical and Pharmaceutical Industry, Manufacture of Aspirins
  
Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines
  
Not Yet Used
  
Other Uses
  
  
Commercial Uses
Creating Artwork, Soil Conditioner, Source of Magnesia (MgO)
  
Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry
  
Types
Peralkaline Nephelinite
  
Semi-anthracite and Meta-anthracite
  
Features
Host Rock for Lead
  
Helps in production of Heat and Electricity, Used as fossil fuel
  
Archaeological Significance
  
  
Monuments
Used
  
Not Yet Used
  
Famous Monuments
Data Not Available
  
Not Applicable
  
Sculpture
Used
  
Not Yet Used
  
Famous Sculptures
Data Not Available
  
Not Applicable
  
Pictographs
Not Used
  
Used
  
Petroglyphs
Not Used
  
Used
  
Figurines
Used
  
Not Yet Used
  
Fossils
Absent
  
Absent
  
Formation
Nephelinite 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.
  
Anthracite forms from the accumulation of plant debris in a swamp environment. When plant debris dies and falls into the swamp, the standing water of the swamp protects it from decay.
  
Composition
  
  
Mineral Content
Clinopyroxene, Nepheline, Plagioclase
  
Calcite, Clay, Clay Minerals
  
Compound Content
Ca, CaO, Carbon, Cl, MgO
  
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur
  
Transformation
  
  
Metamorphism
Yes
  
Yes
  
Types of Metamorphism
Contact Metamorphism
  
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism
  
Weathering
Yes
  
No
  
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
  
Not Applicable
  
Erosion
Yes
  
No
  
Types of Erosion
Chemical Erosion, Water Erosion, Wind Erosion
  
Not Applicable
  
Physical Properties
  
  
Hardness
6.5
  
1-1.5
  
Grain Size
Fine Grained
  
Medium to Fine Coarse Grained
  
Fracture
Flat
  
Conchoidal
  
Streak
White
  
Black
  
Porosity
Less Porous
  
Less Porous
  
Luster
Vitreous to Metallic
  
Shiny
  
Compressive Strength
35.00 N/mm
2
  
29
Not Available
  
Cleavage
Imperfect
  
Non-Existent
  
Toughness
2.7
  
Not Available
  
Specific Gravity
2.4-2.9
  
1.1-1.4
  
Transparency
Opaque
  
Opaque
  
Density
2.5-3 g/cm3
  
1.25-2.5 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
0.88 kJ/Kg K
  
13
1.32 kJ/Kg K
  
4
Resistance
Heat Resistant
  
Heat Resistant, Water Resistant
  
Deposits in Eastern Continents
  
  
Asia
Japan
  
Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam
  
Africa
Rwanda, Tanzania
  
Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania
  
Europe
Not Yet Found
  
Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom
  
Others
Hawaii Islands
  
Not Yet Found
  
Deposits in Western Continents
  
  
North America
Canada, USA
  
Canada, Mexico, USA
  
South America
Colombia
  
Brazil, Chile, Colombia, Venezuela
  
Deposits in Oceania Continent
  
  
Australia
Not Yet Found
  
New South Wales, Queensland, Victoria
  
Nephelinite vs Anthracite 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. Nephelinite vs Anthracite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Nephelinite and Properties of Anthracite. Learn more about Nephelinite vs Anthracite in the next section. The interior uses of Nephelinite include Decorative aggregates, Homes and Interior decoration whereas the interior uses of Anthracite include Not yet used. Due to some exceptional properties of Nephelinite and Anthracite, they have various applications in construction industry. The uses of Nephelinite in construction industry include As dimension stone, Cement manufacture, Construction aggregate, For road aggregate and that of Anthracite include Cement manufacture, For road aggregate, Making natural cement, Steel production.
More about Nephelinite and Anthracite
Here you can know more about Nephelinite and Anthracite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Nephelinite and Anthracite consists of mineral content and compound content. The mineral content of Nephelinite includes Clinopyroxene, Nepheline, Plagioclase and mineral content of Anthracite includes Calcite, Clay, Clay Minerals. You can also check out the list of all Igneous Rocks. When we have to compare Nephelinite vs Anthracite, the texture, color and appearance plays an important role in determining the type of rock. Nephelinite is available in black, brown, colourless, green, grey, white colors whereas, Anthracite is available in black, brown, dark brown, grey, light to dark grey colors. Appearance of Nephelinite is Skeletal and that of Anthracite is Veined or Pebbled. Properties of rock is another aspect for Nephelinite vs Anthracite. The hardness of Nephelinite is 6.5 and that of Anthracite is 1-1.5. The types of Nephelinite are Peralkaline Nephelinite whereas types of Anthracite are Semi-anthracite and Meta-anthracite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Nephelinite is white while that of Anthracite is black. The specific heat capacity of Nephelinite is 0.88 kJ/Kg K and that of Anthracite is 1.32 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Nephelinite is heat resistant whereas Anthracite is heat resistant, water resistant.