Granulite

Eclogite

Granulite and Eclogite

Granulite

Eclogite

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Definition

Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.

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

History

Origin

Central Europe

Discoverer

Unknown

René Just Haüy

Etymology

From Latin granulum, a little grain or fine grained

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

Class

Metamorphic Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Granoblastic

Earthy

Color

Black, Brown

Black, Brown, Green, Grey, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Veined or Pebbled

Dull, Banded and Foilated

Uses

Architecture

Interior Uses

Bathrooms, Countertops, Decorative Aggregates, Entryways, Flooring, Homes, Hotels, Interior Decoration, Kitchens, Stair Treads

Decorative Aggregates, Interior Decoration

Exterior Uses

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

Paving Stone, Garden Decoration

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Building houses or walls

Medical Industry

In Chemical and Pharmaceutical Industry, Medicines and Cosmetics

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts

Other Uses

Commercial Uses

Curling, Gemstone, Laboratory bench tops, Soil Conditioner, Tombstones

Creating Artwork, Gemstone

Types

Metamorphic rock

Eclogite

Features

Clasts are smooth to touch

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

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

Granulite is a fine-grained granular metamorphic rock in which the main component minerals are feldspars and quartz and forms at high temperature and pressure conditions.

Eclogite forms from high-pressure metamorphism of mafic igneous rocks mainly, basalt or gabbro as it plunges into the mantle in a subduction zone.

Composition

Mineral Content

Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Quartz

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

Compound Content

Aluminium Oxide, CaO, Carbon Dioxide, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Sulfur Dioxide, Titanium Dioxide

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

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering

Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Sea Erosion

Properties

Physical Properties

Hardness

6-73.5-4

1 7

👆🏻

Grain Size

Medium to Coarse Grained

Fine Grained

Fracture

Streak

White

Porosity

Very Less Porous

Less Porous

Luster

Vitreous

Subvitreous to Dull

Compressive Strength

175.00 N/mm²200.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

Specific Gravity

2.8-3.02.86-2.87

0 8.4

👆🏻

Transparency

Opaque

Density

3.06-3.33 g/cm³3.2-3.6 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.14 kJ/Kg K0.75 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Wear Resistant

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam

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

Africa

Angola, Egypt, Madagascar, Nigeria, South Africa

Ethiopia, Morocco, South Africa

Europe

Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic

France, Germany, Italy, Norway, Scotland

Others

Greenland

Deposits in Western Continents

North America

Canada, USA

Canada, Costa Rica, Panama, USA

South America

Argentina, Brazil, Colombia, Ecuador

Deposits in Oceania Continent

Australia

Central Australia, New Zealand, Queensland

All about Granulite and Eclogite Properties

Know all about Granulite and Eclogite properties here. All properties of rocks are important as they define the type of rock and its application. Granulite and Eclogite belong to Metamorphic Rocks.Texture of Granulite is Granoblastic whereas that of Eclogite is Earthy. Granulite appears Veined or Pebbled and Eclogite appears Dull, Banded and Foilated. The luster of Granulite is vitreous while that of Eclogite is subvitreous to dull. Granulite is available in black, brown colors whereas Eclogite is available in black, brown, green, grey, pink, white colors. The commercial uses of Granulite are curling, gemstone, laboratory bench tops, soil conditioner, tombstones and that of Eclogite are creating artwork, gemstone.