Definition
Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature
Talc carbonate is nothing but a rock sequence or a mineral composition found in metamorphic ultramafic rocks.
Origin
-
China, USA, Middle east
Discoverer
René Just Haüy
Unknown
Etymology
From French, Greek eklogē selection with reference to the selective content of the rock + -ite1
From medieval Latin, talcum
Class
Metamorphic Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Color
Black, Brown, Green, Grey, Pink, White
Grey, White
Durability
Durable
Durable
Scratch Resistant
Yes
Yes
Appearance
Dull, Banded and Foilated
Soft
Interior Uses
Decorative Aggregates, Interior Decoration
Decorative Aggregates, Interior Decoration
Exterior Uses
Paving Stone, Garden Decoration
Garden Decoration
Other Architectural Uses
Curbing
Powder
Construction Industry
-
Source of calcium
Medical Industry
In Chemical and Pharmaceutical Industry, Medicines and Cosmetics
Taken as a Supplement for Calcium or Magnesium
Antiquity Uses
Artifacts
Artifacts, Jewellery, Monuments, Sculpture, Small Figurines
Commercial Uses
Creating Artwork, Gemstone
Manufacturing of baby powder
Types
Eclogite
Sedimentary rock
Features
Available in Lots of Colors and Patterns, Generally rough to touch, Is one of the oldest rock
Easily splits into thin plates, Generally rough to touch, Host Rock for Lead
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.
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Talc Carbonate is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.
Mineral Content
Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite
Carbonate, Chlorite, Magnesium
Compound Content
Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, Magnesium Carbonate, MgO, Sodium Oxide, Potassium, Sodium
CaO, Carbon Dioxide, MgO
Types of Metamorphism
-
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism
Types of Weathering
Mechanical Weathering
-
Types of Erosion
Chemical Erosion, Sea Erosion
-
Grain Size
Fine Grained
Fine Grained
Porosity
Less Porous
Less Porous
Luster
Subvitreous to Dull
Pearly
Specific Gravity
2.86-2.87
2.86
Transparency
Opaque
Translucent
Density
3.2-3.6 g/cm3
2.8-2.9 g/cm3
Resistance
Heat Resistant
Heat Resistant, Wear Resistant
Deposits in Eastern Continents
Asia
India, Kazakhstan, Kuwait, Russia, South Korea, Thailand, Turkey
-
Africa
Ethiopia, Morocco, South Africa
Ethiopia, Ghana, Western Africa
Europe
France, Germany, Italy, Norway, Scotland
England
Deposits in Western Continents
North America
Canada, Costa Rica, Panama, USA
Canada, USA
South America
Argentina, Brazil, Colombia, Ecuador
Argentina, Bolivia, Uruguay
Deposits in Oceania Continent
Australia
Central Australia, New Zealand, Queensland
Central Australia, South Australia, Western Australia