Eclogite

Adakite

Eclogite and Adakite

Eclogite

Adakite

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1 Definition

1.1 Definition

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

Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs

1.2 History

1.2.1 Origin

Unknown

Adak, Aleutian Islands

1.2.2 Discoverer

René Just Haüy

Defant and Drummond

1.3 Etymology

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

From Adak, Aleutian Islands

1.4 Class

Metamorphic Rocks

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Not Applicable

Volcanic

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Fine Grained Rock, Medium Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Earthy

Porphyritic

2.2 Color

Black, Brown, Colourless, Green, Grey, Pink, White

Black, Brown, Light to Dark Grey

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Dull, Banded and Foilated

Dull and Soft

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens

3.1.2 Exterior Uses

Paving Stone, Garden Decoration

As Building Stone, As Facing Stone, Office Buildings

3.1.3 Other Architectural Uses

Curbing

Whetstones

3.2 Industry

3.2.1 Construction Industry

Not Yet Used

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

3.2.2 Medical Industry

In Chemical and Pharmaceutical Industry, Medicines and Cosmetics

Not Yet Used

3.3 Antiquity Uses

Artifacts

Monuments, Sculpture, Small Figurines

3.4 Other Uses

3.4.1 Commercial Uses

Creating Artwork, Gemstone

Commemorative Tablets, Pottery, Used in aquariums

4 Types

4.1 Types

Not Available

4.2 Features

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

Has High structural resistance against erosion and climate, Host rock for Diamond, Very fine grained rock

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Not Applicable

Data Not Available

4.3.3 Sculpture

Not Yet Used

Used

4.3.4 Famous Sculptures

Not Applicable

Data Not Available

4.3.5 Pictographs

Used

4.3.6 Petroglyphs

Used

4.3.7 Figurines

Not Yet Used

Used

4.4 Fossils

Absent

5 Formation

5.1 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.

Adakite rocks are formed when the hydrous fluids are released from minerals that break down in metamorphosed basalt, and rise into the mantle they initiate partial melting.

5.2 Composition

5.2.1 Mineral Content

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

Olivine, Plagioclase, Pyroxene

5.2.2 Compound Content

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

Aluminium Oxide, MgO, Silicon Dioxide

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Not Applicable

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Mechanical Weathering

Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Chemical Erosion, Sea Erosion

Coastal Erosion, Sea Erosion, Water Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

3.5-43-4

1 7

6.1.2 Grain Size

Fine Grained

Fine to Medium Grained

6.1.3 Fracture

Not Available

Conchoidal

6.1.4 Streak

White

Bluish Black

6.1.5 Porosity

Less Porous

6.1.6 Luster

Subvitreous to Dull

Grainy, Pearly and Vitreous

6.1.7 Compressive Strength

NANA

0.15 450

6.1.8 Cleavage

Perfect

Not Available

6.1.9 Toughness

Not Available

6.1.10 Specific Gravity

2.86-2.87Not Available

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

3.2-3.6 g/cm³Not Available

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NANA

0.14 3.2

6.2.2 Resistance

Heat Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

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

India, Russia

7.1.2 Africa

Ethiopia, Morocco, South Africa

Ethiopia, Somalia, South Africa

7.1.3 Europe

France, Germany, Italy, Norway, Scotland

Iceland

7.1.4 Others

Greenland

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada, Costa Rica, Panama, USA

Canada, USA

7.2.2 South America

Argentina, Brazil, Colombia, Ecuador

Brazil

7.3 Deposits in Oceania Continent

7.3.1 Australia

Central Australia, New Zealand, Queensland

Not Yet Found

All about Eclogite and Adakite Properties

Know all about Eclogite and Adakite properties here. All properties of rocks are important as they define the type of rock and its application. Eclogite belongs to Metamorphic Rocks while Adakite belongs to Igneous Rocks.Texture of Eclogite is Earthy whereas that of Adakite is Porphyritic. Eclogite appears Dull, Banded and Foilated and Adakite appears Dull and Soft. The luster of Eclogite is subvitreous to dull while that of Adakite is grainy, pearly and vitreous. Eclogite is available in black, brown, colourless, green, grey, pink, white colors whereas Adakite is available in black, brown, light to dark grey colors. The commercial uses of Eclogite are creating artwork, gemstone and that of Adakite are commemorative tablets, pottery, used in aquariums.