Definition
Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature
  
Pyrolite is an igneous rock consisting of about three parts of peridotite and one part of basalt
  
History
  
  
Origin
Unknown
  
Pike County, U.S
  
Discoverer
René Just Haüy
  
Unknown
  
Etymology
From French, Greek eklogē selection with reference to the selective content of the rock + -ite1
  
From the chemical and mineralogical composition of the upper mantle of the Earth
  
Class
Metamorphic Rocks
  
Igneous Rocks
  
Sub-Class
Durable Rock, Medium Hardness Rock
  
Durable Rock, Medium Hardness Rock
  
Family
  
  
Group
Not Applicable
  
Plutonic
  
Other Categories
Fine Grained Rock, Opaque Rock
  
Coarse Grained Rock, Opaque Rock
  
Texture
Earthy
  
Phaneritic
  
Color
Black, Brown, Colourless, Green, Grey, Pink, White
  
Dark Greenish - Grey
  
Maintenance
Less
  
Less
  
Durability
Durable
  
Durable
  
Water Resistant
No
  
Yes
  
Scratch Resistant
Yes
  
Yes
  
Stain Resistant
Yes
  
No
  
Wind Resistant
Yes
  
No
  
Acid Resistant
No
  
Yes
  
Appearance
Dull, Banded and Foilated
  
Rough and Shiny
  
Architecture
  
  
Interior Uses
Decorative Aggregates, Interior Decoration
  
Decorative Aggregates, Interior Decoration
  
Exterior Uses
Paving Stone, Garden Decoration
  
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
  
Other Architectural Uses
Curbing
  
Curbing
  
Industry
  
  
Construction Industry
Not Yet Used
  
As Dimension Stone, Cobblestones
  
Medical Industry
In Chemical and Pharmaceutical Industry, Medicines and Cosmetics
  
Not Yet Used
  
Antiquity Uses
Artifacts
  
Artifacts, Monuments, Sculpture
  
Other Uses
  
  
Commercial Uses
Creating Artwork, Gemstone
  
Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds
  
Types
Not Available
  
Dunite, Wehrlite, Harzburgite, Lherzolite
  
Features
Available in Lots of Colors and Patterns, Generally rough to touch, Is one of the oldest rock
  
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
  
Pictographs
Used
  
Used
  
Petroglyphs
Used
  
Used
  
Figurines
Not Yet Used
  
Used
  
Fossils
Absent
  
Absent
  
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.
  
Pyrolite 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.
  
Composition
  
  
Mineral Content
Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite
  
Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene
  
Compound Content
Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, Magnesium Carbonate, MgO, Sodium Oxide, Potassium, Sodium
  
Ca, Fe, Mg, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide
  
Transformation
  
  
Metamorphism
No
  
Yes
  
Types of Metamorphism
Not Applicable
  
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
  
Weathering
Yes
  
Yes
  
Types of Weathering
Mechanical Weathering
  
Biological Weathering, Chemical Weathering, Mechanical Weathering
  
Erosion
Yes
  
Yes
  
Types of Erosion
Chemical Erosion, Sea Erosion
  
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
  
Physical Properties
  
  
Hardness
3.5-4
  
5.5-6
  
Grain Size
Fine Grained
  
Coarse Grained
  
Fracture
Not Available
  
Irregular
  
Streak
White
  
White
  
Porosity
Less Porous
  
Less Porous
  
Luster
Subvitreous to Dull
  
Shiny
  
Compressive Strength
Not Available
  
107.55 N/mm
2
  
19
Cleavage
Perfect
  
Imperfect
  
Toughness
Not Available
  
2.1
  
Specific Gravity
2.86-2.87
  
3-3.01
  
Transparency
Opaque
  
Translucent to Opaque
  
Density
3.2-3.6 g/cm3
  
3.1-3.4 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
Not Available
  
1.25 kJ/Kg K
  
6
Resistance
Heat Resistant
  
Heat Resistant, Pressure Resistant, Wear Resistant
  
Deposits in Eastern Continents
  
  
Asia
India, Kazakhstan, Kuwait, Russia, South Korea, Thailand, Turkey
  
China, India, Indonesia, Kazakhstan, Russia, South Korea, Thailand, Turkey
  
Africa
Ethiopia, Morocco, South Africa
  
Morocco, South Africa
  
Europe
France, Germany, Italy, Norway, Scotland
  
Finland, France, Georgia, Germany, Great Britain, Italy, Kazakhstan, Netherlands, Norway, Spain, Switzerland, Venezuela
  
Others
Greenland
  
Not Yet Found
  
Deposits in Western Continents
  
  
North America
Canada, Costa Rica, Panama, USA
  
Canada, USA
  
South America
Argentina, Brazil, Colombia, Ecuador
  
Brazil
  
Deposits in Oceania Continent
  
  
Australia
Central Australia, New Zealand, Queensland
  
New Zealand, Western Australia
  
Eclogite vs Pyrolite 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 Pyrolite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Eclogite and Properties of Pyrolite. Learn more about Eclogite vs Pyrolite in the next section. The interior uses of Eclogite include Decorative aggregates and Interior decoration whereas the interior uses of Pyrolite include Decorative aggregates and Interior decoration. Due to some exceptional properties of Eclogite and Pyrolite, they have various applications in construction industry. The uses of Eclogite in construction industry include Not yet used and that of Pyrolite include As dimension stone, Cobblestones.
More about Eclogite and Pyrolite
Here you can know more about Eclogite and Pyrolite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Eclogite and Pyrolite 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 Pyrolite includes Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene. You can also check out the list of all . When we have to compare Eclogite vs Pyrolite, the texture, color and appearance plays an important role in determining the type of rock. Eclogite is available in black, brown, colourless, green, grey, pink, white colors whereas, Pyrolite is available in dark greenish - grey colors. Appearance of Eclogite is Dull, Banded and Foilated and that of Pyrolite is Rough and Shiny. Properties of rock is another aspect for Eclogite vs Pyrolite. The hardness of Eclogite is 3.5-4 and that of Pyrolite is 5.5-6. The types of Eclogite are Not Available whereas types of Pyrolite are Dunite, Wehrlite, Harzburgite, Lherzolite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Eclogite and Pyrolite is white. The specific heat capacity of Eclogite is Not Available and that of Pyrolite 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.Eclogite is heat resistant whereas Pyrolite is heat resistant, pressure resistant, wear resistant.