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Eclogite and Taconite


Taconite and Eclogite


Definition

Definition
Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature   
Taconite is a low-grade iron ore which belongs to sedimentary rock and containing about 27% iron and 51% silica   

History
  
  

Origin
Unknown   
Western Australia, Minnesota   

Discoverer
René Just Haüy   
Newton Horace Winchell   

Etymology
From French, Greek eklogē selection with reference to the selective content of the rock + -ite1   
From the name of Taconic Mountains in New England   

Class
Metamorphic Rocks   
Sedimentary Rocks   

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

Family
  
  

Group
Not Applicable   
Not Applicable   

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

Texture

Texture
Earthy   
Banded, Trellis   

Color
Black, Brown, Colourless, Green, Grey, Pink, White   
Red, Reddish Brown   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
Yes   

Scratch Resistant
Yes   
Yes   

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, Entryways, Flooring, Homes, Interior Decoration   

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
Not Yet Used   
As Dimension Stone, Used for flooring, stair treads, borders and window sills.   

Medical Industry
In Chemical and Pharmaceutical Industry, Medicines and Cosmetics   
Not Yet Used   

Antiquity Uses
Artifacts   
Artifacts   

Other Uses
  
  

Commercial Uses
Creating Artwork, Gemstone   
As a touchstone, Cemetery Markers, Creating Artwork   

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   

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   
Not Used   

Petroglyphs
Used   
Not 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.   
Taconite is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. When the river reaches a lake or sea, its load of transported rocks settles or deposits at the bottom of sea or lake.   

Composition
  
  

Mineral Content
Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite   
Hematite, Magnetite, Quartz   

Compound Content
Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, Magnesium Carbonate, MgO, Sodium Oxide, Potassium, Sodium   
Fe, Iron(III) Oxide, Silicon Dioxide   

Transformation
  
  

Metamorphism
No   
No   

Types of Metamorphism
Not Applicable   
Not Applicable   

Weathering
Yes   
Yes   

Types of Weathering
Mechanical Weathering   
Biological Weathering, Mechanical Weathering   

Erosion
Yes   
Yes   

Types of Erosion
Chemical Erosion, Sea Erosion   
Chemical Erosion, Coastal Erosion, Glacier Erosion, Water Erosion, Wind Erosion   

Properties

Physical Properties
  
  

Hardness
3.5-4   
5.5-6   

Grain Size
Fine Grained   
Large and Coarse Grained   

Fracture
Not Available   
Uneven, Splintery or Conchoidal   

Streak
White   
White   

Porosity
Less Porous   
Highly Porous   

Luster
Subvitreous to Dull   
Earthy   

Cleavage
Perfect   
Imperfect   

Toughness
Not Available   
1.5   

Specific Gravity
2.86-2.87   
5-5.3   

Transparency
Opaque   
Translucent to Opaque   

Density
3.2-3.6 g/cm3   
Not Available   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
3.20 kJ/Kg K   
1

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

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Kazakhstan, Kuwait, Russia, South Korea, Thailand, Turkey   
China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam   

Africa
Ethiopia, Morocco, South Africa   
Kenya, Morocco, South Africa, Tanzania   

Europe
France, Germany, Italy, Norway, Scotland   
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom   

Others
Greenland   
Greenland, Mid-Atlantic Ridge   

Deposits in Western Continents
  
  

North America
Canada, Costa Rica, Panama, USA   
Canada, Mexico, USA   

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

Deposits in Oceania Continent
  
  

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

Summary >>
<< Reserves

All about Eclogite and Taconite Properties

Know all about Eclogite and Taconite properties here. All properties of rocks are important as they define the type of rock and its application. Eclogite belongs to Metamorphic Rocks while Taconite belongs to Sedimentary Rocks.Texture of Eclogite is Earthy whereas that of Taconite is Banded, Trellis. Eclogite appears Dull, Banded and Foilated and Taconite appears Layered, Banded, Veined and Shiny. The luster of Eclogite is subvitreous to dull while that of Taconite is earthy. Eclogite is available in black, brown, colourless, green, grey, pink, white colors whereas Taconite is available in red, reddish brown colors. The commercial uses of Eclogite are creating artwork, gemstone and that of Taconite are as a touchstone, cemetery markers, creating artwork.

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