Definition
Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster
Origin
-
Pennsylvania, U.S.
Discoverer
René Just Haüy
Unknown
Etymology
From French, Greek eklogē selection with reference to the selective content of the rock + -ite1
From Greek anthrakites, from anthrax, anthrak meaning coal
Class
Metamorphic Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Texture
Earthy
Amorphous, Glassy
Color
Black, Brown, Green, Grey, Pink, White
Black, Brown, Dark Brown, Grey, Light to Dark Grey
Durability
Durable
Durable
Appearance
Dull, Banded and Foilated
Veined or Pebbled
Interior Uses
Decorative Aggregates, Interior Decoration
-
Exterior Uses
Paving Stone, Garden Decoration
-
Other Architectural Uses
Curbing
-
Construction Industry
-
Cement Manufacture, for Road Aggregate, Making natural cement, Steel Production
Medical Industry
In Chemical and Pharmaceutical Industry, Medicines and Cosmetics
In Chemical and Pharmaceutical Industry, Manufacture of Aspirins
Antiquity Uses
Artifacts
-
Commercial Uses
Creating Artwork, Gemstone
Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry
Types
Eclogite
Semi-anthracite and Meta-anthracite
Features
Available in Lots of Colors and Patterns, Generally rough to touch, Is one of the oldest rock
Helps in production of Heat and Electricity, Used as fossil fuel
Archaeological Significance
Formation
Eclogite forms from high-pressure metamorphism of mafic igneous rocks mainly, basalt or gabbro as it plunges into the mantle in a subduction zone.
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.
Mineral Content
Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite
Calcite, Clay, Clay Minerals
Compound Content
Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, Magnesium Carbonate, MgO, Sodium Oxide, Potassium, Sodium
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur
Types of Metamorphism
-
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism
Types of Weathering
Mechanical Weathering
-
Types of Erosion
Chemical Erosion, Sea Erosion
-
Grain Size
Fine Grained
Medium to Fine Coarse Grained
Porosity
Less Porous
Less Porous
Luster
Subvitreous to Dull
Shiny
Specific Gravity
2.86-2.87
1.1-1.4
Transparency
Opaque
Opaque
Density
3.2-3.6 g/cm3
1.25-2.5 g/cm3
Resistance
Heat Resistant
Heat Resistant, Water Resistant
Deposits in Eastern Continents
Asia
India, Kazakhstan, Kuwait, Russia, South Korea, Thailand, Turkey
Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam
Africa
Ethiopia, Morocco, South Africa
Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania
Europe
France, Germany, Italy, Norway, Scotland
Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom
Deposits in Western Continents
North America
Canada, Costa Rica, Panama, USA
Canada, Mexico, USA
South America
Argentina, Brazil, Colombia, Ecuador
Brazil, Chile, Colombia, Venezuela
Deposits in Oceania Continent
Australia
Central Australia, New Zealand, Queensland
New South Wales, Queensland, Victoria
All about Eclogite and Anthracite Properties
Know all about Eclogite and Anthracite properties here. All properties of rocks are important as they define the type of rock and its application. Eclogite and Anthracite belong to Metamorphic Rocks.Texture of Eclogite is Earthy whereas that of Anthracite is Amorphous, Glassy. Eclogite appears Dull, Banded and Foilated and Anthracite appears Veined or Pebbled. The luster of Eclogite is subvitreous to dull while that of Anthracite is shiny. Eclogite is available in black, brown, green, grey, pink, white colors whereas Anthracite is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Eclogite are creating artwork, gemstone and that of Anthracite are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.