Definition
Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
Origin
-
Western Australia, Minnesota
Discoverer
René Just Haüy
Unknown
Etymology
From French, Greek eklogē selection with reference to the selective content of the rock + -ite1
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock
Texture
Earthy
Banded, Trellis
Color
Black, Brown, Green, Grey, Pink, White
Red, Reddish Brown
Durability
Durable
Durable
Appearance
Dull, Banded and Foilated
Banded and Glassy
Interior Uses
Decorative Aggregates, Interior Decoration
Decorative Aggregates, Interior Decoration
Exterior Uses
Paving Stone, Garden Decoration
As Facing Stone, Garden Decoration, Paving Stone
Other Architectural Uses
Curbing
Curbing
Construction Industry
-
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories
Medical Industry
In Chemical and Pharmaceutical Industry, Medicines and Cosmetics
-
Antiquity Uses
Artifacts
Artifacts, Jewellery, Monuments
Commercial Uses
Creating Artwork, Gemstone
Creating Artwork, Jewelry
Types
Eclogite
Algoma-type , Lake Superior-type and Superior-type
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
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.
Jaspillite is a type of sedimentary rock which is formed by the compaction and sedimentation of pieces of broken or weathered rocks and minerals.
Mineral Content
Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite
Coesite, Quartz, Sand
Compound Content
Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, Magnesium Carbonate, MgO, Sodium Oxide, Potassium, Sodium
Fe, Iron(III) Oxide, Silicon Dioxide
Types of Metamorphism
-
-
Types of Weathering
Mechanical Weathering
Biological Weathering, Chemical Weathering
Types of Erosion
Chemical Erosion, Sea Erosion
Chemical Erosion, Coastal Erosion
Grain Size
Fine Grained
Large and Coarse Grained
Porosity
Less Porous
Very Less Porous
Luster
Subvitreous to Dull
Earthy
Specific Gravity
2.86-2.87
5.0-5.3
Transparency
Opaque
Translucent to Opaque
Density
3.2-3.6 g/cm3
0-5.7 g/cm3
Resistance
Heat Resistant
Heat Resistant, Impact Resistant, Wear Resistant
Deposits in Eastern Continents
Asia
India, Kazakhstan, Kuwait, Russia, South Korea, Thailand, Turkey
Russia
Africa
Ethiopia, Morocco, South Africa
-
Europe
France, Germany, Italy, Norway, Scotland
Ukraine
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
Western Australia