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Eclogite vs Anorthosite


Anorthosite vs Eclogite


Definition

Definition
Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature  
Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase  

History
  
  

Origin
-  
-  

Discoverer
René Just Haüy  
Unknown  

Etymology
From French, Greek eklogē selection with reference to the selective content of the rock + -ite1  
From French anorthose plagioclase + -ite1  

Class
Metamorphic Rocks  
Igneous Rocks  

Sub-Class
Durable Rock, Medium Hardness Rock  
Durable Rock, Medium Hardness Rock  

Family
  
  

Group
-  
Plutonic  

Other Categories
Fine Grained Rock, Opaque Rock  
Coarse Grained Rock, Opaque Rock  

Texture

Texture
Earthy  
Foliated, Glassy  

Color
Black, Brown, Green, Grey, Pink, White  
Black, Bluish - Grey, Brown, Green, Grey, Light Greenish Grey, Pink, White  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
No  
Yes  

Scratch Resistant
Yes  
No  

Stain Resistant
Yes  
No  

Wind Resistant
Yes  
Yes  

Acid Resistant
No  
No  

Appearance
Dull, Banded and Foilated  
Layered, Banded, Veined and Shiny  

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Interior Decoration  
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration  

Exterior Uses
Paving Stone, Garden Decoration  
As Building Stone, As Facing Stone, Garden Decoration  

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
-  
As Dimension Stone, Cement Manufacture, for Road Aggregate  

Medical Industry
In Chemical and Pharmaceutical Industry, Medicines and Cosmetics  
-  

Antiquity Uses
Artifacts  
Artifacts, Sculpture, Small Figurines  

Other Uses
  
  

Commercial Uses
Creating Artwork, Gemstone  
Creating Artwork, Curling  

Types

Types
Eclogite  
Proterozoic Anorthosite and Archean Anorthosite  

Features
Available in Lots of Colors and Patterns, Generally rough to touch, Is one of the oldest rock  
Generally rough to touch, Is one of the oldest rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

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.  
Anorthosite is a phaneritic, intrusive igneous rock which is characterized by a predominance of plagioclase feldspar which is almost 90–100%, and a minimal mafic component.   

Composition
  
  

Mineral Content
Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite  
Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene  

Compound Content
Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, Magnesium Carbonate, MgO, Sodium Oxide, Potassium, Sodium  
Ca, CaO, Chromium(III) Oxide, MgO, Sulfur Trioxide  

Transformation
  
  

Metamorphism
No  
Yes  

Types of Metamorphism
-  
Cataclastic Metamorphism, Contact Metamorphism  

Weathering
Yes  
Yes  

Types of Weathering
Mechanical Weathering  
Biological Weathering  

Erosion
Yes  
Yes  

Types of Erosion
Chemical Erosion, Sea Erosion  
Chemical Erosion, Wind Erosion  

Properties

Physical Properties
  
  

Hardness
3.5-4  
5-6  

Grain Size
Fine Grained  
Coarse Grained  

Fracture
-  
Irregular  

Streak
White  
White  

Porosity
Less Porous  
Less Porous  

Luster
Subvitreous to Dull  
Pearly to Subvitreous  

Compressive Strength
200.00 N/mm2  
13
180.00 N/mm2  
18

Cleavage
Perfect  
-  

Toughness
-  
-  

Specific Gravity
2.86-2.87  
2.62-2.82  

Transparency
Opaque  
Translucent  

Density
3.2-3.6 g/cm3  
2.7-4 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.75 kJ/Kg K  
20
0.84 kJ/Kg K  
15

Resistance
Heat Resistant  
Heat Resistant, Impact Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Kazakhstan, Kuwait, Russia, South Korea, Thailand, Turkey  
-  

Africa
Ethiopia, Morocco, South Africa  
-  

Europe
France, Germany, Italy, Norway, Scotland  
Bulgaria, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Malta, Poland, Portugal, Romania, Slovenia, Spain, Sweden, The Czech Republic  

Others
Greenland  
-  

Deposits in Western Continents
  
  

North America
Canada, Costa Rica, Panama, USA  
Canada  

South America
Argentina, Brazil, Colombia, Ecuador  
Bolivia, Colombia  

Deposits in Oceania Continent
  
  

Australia
Central Australia, New Zealand, Queensland  
Central Australia, South Australia, Western Australia  

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Eclogite vs Anorthosite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Eclogite and Anorthosite Reserves. Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature. Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Eclogite vs Anorthosite information and Eclogite vs Anorthosite characteristics in the upcoming sections.

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Eclogite vs Anorthosite 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. Eclogite vs Anorthosite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Eclogite and Properties of Anorthosite. Learn more about Eclogite vs Anorthosite in the next section. The interior uses of Eclogite include Decorative aggregates and Interior decoration whereas the interior uses of Anorthosite include Decorative aggregates, Floor tiles, Homes and Interior decoration. Due to some exceptional properties of Eclogite and Anorthosite, they have various applications in construction industry. The uses of Eclogite in construction industry include and that of Anorthosite include As dimension stone, Cement manufacture, For road aggregate.

More about Eclogite and Anorthosite

Here you can know more about Eclogite and Anorthosite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Eclogite and Anorthosite consists of mineral content and compound content. The mineral content of Eclogite includes Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite and mineral content of Anorthosite includes Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene. You can also check out the list of all Metamorphic Rocks. When we have to compare Eclogite vs Anorthosite, the texture, color and appearance plays an important role in determining the type of rock. Eclogite is available in black, brown, green, grey, pink, white colors whereas, Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors. Appearance of Eclogite is Dull, Banded and Foilated and that of Anorthosite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Eclogite vs Anorthosite. The hardness of Eclogite is 3.5-4 and that of Anorthosite is 5-6. The types of Eclogite are Eclogite whereas types of Anorthosite are Proterozoic Anorthosite and Archean Anorthosite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Eclogite and Anorthosite is white. The specific heat capacity of Eclogite is 0.75 kJ/Kg K and that of Anorthosite is 0.84 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Eclogite is heat resistant whereas Anorthosite is heat resistant, impact resistant, pressure resistant, scratch resistant, wear resistant.

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