Eclogite and Laterite
Definition
Definition
Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature
Laterite rock is a type of Sedimentary rock which is rich in iron and aluminium, formed in hot and wet tropical areas
History
Origin
Unknown
India
Discoverer
René Just Haüy
Francis Buchanan-Hamilton
Etymology
From French, Greek eklogē selection with reference to the selective content of the rock + -ite1
From Latin later brick, tile + -ite1
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Family
Group
Not Applicable
Not Applicable
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Texture
Texture
Earthy
Earthy, Massive, Porphyritic
Color
Black, Brown, Colourless, Green, Grey, Pink, White
Brown, Buff, Red
Maintenance
Less
Less
Durability
Durable
Durable
Water Resistant
No
No
Scratch Resistant
Yes
No
Stain Resistant
Yes
No
Wind Resistant
Yes
No
Acid Resistant
No
No
Appearance
Dull, Banded and Foilated
Rough and Banded
Uses
Architecture
Interior Uses
Decorative Aggregates, Interior Decoration
Decorative Aggregates, Flooring, Interior Decoration
Exterior Uses
Paving Stone, Garden Decoration
As Building Stone, As Facing Stone, Garden Decoration
Other Architectural Uses
Curbing
Curbing
Industry
Construction Industry
Not Yet Used
Cobblestones, for Road Aggregate, Landscaping, Roadstone
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
An Oil and Gas Reservoir, Source of bauxite, Used in aquariums
Types
Types
Not Available
Not Available
Features
Available in Lots of Colors and Patterns, Generally rough to touch, Is one of the oldest rock
Is one of the oldest rock, Very fine grained 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
Present
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.
Laterite is a type of sedimentary rock which is generally a reddish weathering product of basalt.
Composition
Mineral Content
Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite
Aluminum Oxides, Biotite, Hematite, Hornblade, Iron Oxides, Manganese Oxides, Micas, Muscovite or Illite, Plagioclase, Pyroxene
Compound Content
Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, Magnesium Carbonate, MgO, Sodium Oxide, Potassium, Sodium
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
Transformation
Metamorphism
No
No
Types of Metamorphism
Not Applicable
Not Applicable
Weathering
Yes
Yes
Types of Weathering
Mechanical Weathering
Biological Weathering, Chemical Weathering
Erosion
Yes
Yes
Types of Erosion
Chemical Erosion, Sea Erosion
Chemical Erosion, Water Erosion, Wind Erosion
Properties
Physical Properties
Hardness
3.5-4
2
Grain Size
Fine Grained
Fine Grained
Fracture
Not Available
Conchoidal
Streak
White
White
Porosity
Less Porous
Highly Porous
Luster
Subvitreous to Dull
Dull
Cleavage
Perfect
Not Applicable
Toughness
Not Available
Not Available
Specific Gravity
2.86-2.87
Not Available
Transparency
Opaque
Opaque
Density
3.2-3.6 g/cm3
Not Available
Thermal Properties
Resistance
Heat Resistant
Heat Resistant, Pressure Resistant
Reserves
Deposits in Eastern Continents
Asia
India, Kazakhstan, Kuwait, Russia, South Korea, Thailand, Turkey
India
Africa
Ethiopia, Morocco, South Africa
East Africa, Western Africa
Europe
France, Germany, Italy, Norway, Scotland
England, Romania, Scotland
Others
Greenland
Not Yet Found
Deposits in Western Continents
North America
Canada, Costa Rica, Panama, USA
Canada, USA
South America
Argentina, Brazil, Colombia, Ecuador
Not Yet Found
Deposits in Oceania Continent
Australia
Central Australia, New Zealand, Queensland
Central Australia, Western Australia
All about Eclogite and Laterite Properties
Know all about Eclogite and Laterite properties here. All properties of rocks are important as they define the type of rock and its application. Eclogite belongs to Metamorphic Rocks while Laterite belongs to Sedimentary Rocks.Texture of Eclogite is Earthy whereas that of Laterite is Earthy, Massive, Porphyritic. Eclogite appears Dull, Banded and Foilated and Laterite appears Rough and Banded. The luster of Eclogite is subvitreous to dull while that of Laterite is dull. Eclogite is available in black, brown, colourless, green, grey, pink, white colors whereas Laterite is available in brown, buff, red colors. The commercial uses of Eclogite are creating artwork, gemstone and that of Laterite are an oil and gas reservoir, source of bauxite, used in aquariums.
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