Adakite

Jadeitite

Adakite and Jadeitite

Adakite

Jadeitite

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Definition

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

Jadeitite is a metamorphic rock usually found in blueschist grade metamorphic terrains

History

Origin

Adak, Aleutian Islands

Discoverer

Defant and Drummond

Unknown

Etymology

From Adak, Aleutian Islands

From pyroxene mineral jadeite

Class

Igneous Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Porphyritic

Earthy

Color

Black, Brown, Light to Dark Grey

Black, Brown, Green, Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull and Soft

Rough and Dull

Uses

Architecture

Interior Uses

Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens

Decorative Aggregates, Homes, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Office Buildings

Garden Decoration, Office Buildings, Paving Stone

Other Architectural Uses

Whetstones

Curbing

Industry

Construction Industry

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

As Dimension Stone, Cutting Tool, Knives

Medical Industry

Antiquity Uses

Monuments, Sculpture, Small Figurines

Artifacts, Jewellery, Monuments, Sculpture

Other Uses

Commercial Uses

Commemorative Tablets, Pottery, Used in aquariums

Commemorative Tablets, Creating Artwork, Jewelry

Types

Intermediate volcanic rock

Metamorphic rock

Features

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

Host Rock for Lead

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

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.

Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Jadeitite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

Composition

Mineral Content

Olivine, Plagioclase, Pyroxene

Carbonate, Magnetite, Pyrrhotite, Serpentine, Sulfides

Compound Content

Aluminium Oxide, MgO, Silicon Dioxide

Ca, CaO, Carbon Dioxide, KCl, MgO, Sulfur Dioxide, Sulphur

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Coastal Erosion, Sea Erosion, Water Erosion

Coastal Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

3-43-5

1 7

👆🏻

Grain Size

Fine to Medium Grained

Very fine-grained

Fracture

Conchoidal

Uneven

Streak

Bluish Black

White, Greenish White or Grey

Porosity

Less Porous

Luster

Grainy, Pearly and Vitreous

Waxy and Dull

Compressive Strength

200.00 N/mm²310.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

-99992.79-3

0 8.4

👆🏻

Transparency

Opaque

Density

-9999 g/cm³2.5-3 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.95 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Water Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Russia

India, Saudi Arabia, Singapore, South Korea

Africa

Ethiopia, Somalia, South Africa

Ethiopia, Western Africa

Europe

Iceland

England, Georgia, Switzerland, United Kingdom

Others

Deposits in Western Continents

North America

Canada, USA

Canada

South America

Brazil

Colombia

Deposits in Oceania Continent

Australia

Central Australia, New South Wales, New Zealand, Western Australia

All about Adakite and Jadeitite Properties

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