Eclogite

Greenschist

Eclogite and Greenschist

Eclogite

Greenschist

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Definition

Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature

Greenschist is a metamorphic rock that is formed under lowest temperatures and pressures and is usually produced by regional metamorphism

History

Origin

Discoverer

René Just Haüy

Unknown

Etymology

From French, Greek eklogē selection with reference to the selective content of the rock + -ite1

From minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpentine which are green in color

Class

Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Earthy

Foliated, Platy

Color

Black, Brown, Green, Grey, Pink, White

Dark Greenish - Grey, Green

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull, Banded and Foilated

Layered and Shiny

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Bathrooms, Countertops, Decorative Aggregates, Entryways, Homes, Interior Decoration

Exterior Uses

Paving Stone, Garden Decoration

As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Building houses or walls, Cement Manufacture, Cutting Tool, for Road Aggregate, Roadstone

Medical Industry

In Chemical and Pharmaceutical Industry, Medicines and Cosmetics

Antiquity Uses

Artifacts

Other Uses

Commercial Uses

Creating Artwork, Gemstone

Blackboards, Manufacture of tools, Writing Slates

Types

Eclogite

Metamorphic rock

Features

Available in Lots of Colors and Patterns, Generally rough to touch, Is one of the oldest rock

Easily splits into thin plates, Smooth to touch

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

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.

Greenschist is medium grade metamorphic rock, formed by the metamorphosis of mudstone or shale, or some types of igneous rock, when it is subjected to higher temperatures and pressures.

Composition

Mineral Content

Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite

Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Serpentine, Sillimanite, Staurolite, Talc

Compound Content

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

CaO, Carbon Dioxide, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Mechanical Weathering

Biological Weathering, Chemical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Sea Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion

Properties

Physical Properties

Hardness

3.5-43.5-4

1 7

👆🏻

Grain Size

Fine Grained

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

White

Porosity

Less Porous

Highly Porous

Luster

Subvitreous to Dull

Shiny

Compressive Strength

200.00 N/mm²160.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Slaty

Toughness

1.5

Specific Gravity

2.86-2.872.5-2.9

0 8.4

👆🏻

Transparency

Opaque

Density

3.2-3.6 g/cm³2.8-2.9 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.75 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant

Impact Resistant, Pressure Resistant, Water Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Kazakhstan, Kuwait, Russia, South Korea, Thailand, Turkey

Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam

Africa

Ethiopia, Morocco, South Africa

Egypt, Ethiopia, Morocco, Nigeria, South Africa

Europe

France, Germany, Italy, Norway, Scotland

Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland

Others

Greenland

Deposits in Western Continents

North America

Canada, Costa Rica, Panama, USA

Canada, Costa Rica, Cuba, Mexico, Panama, USA

South America

Argentina, Brazil, Colombia, Ecuador

Brazil, Colombia, Guyana

Deposits in Oceania Continent

Australia

Central Australia, New Zealand, Queensland

New South Wales, New Zealand, Queensland

All about Eclogite and Greenschist Properties

Know all about Eclogite and Greenschist properties here. All properties of rocks are important as they define the type of rock and its application. Eclogite and Greenschist belong to Metamorphic Rocks.Texture of Eclogite is Earthy whereas that of Greenschist is Foliated, Platy. Eclogite appears Dull, Banded and Foilated and Greenschist appears Layered and Shiny. The luster of Eclogite is subvitreous to dull while that of Greenschist is shiny. Eclogite is available in black, brown, green, grey, pink, white colors whereas Greenschist is available in dark greenish - grey, green colors. The commercial uses of Eclogite are creating artwork, gemstone and that of Greenschist are blackboards, manufacture of tools, writing slates.