Adakite

Skarn

Adakite vs Skarn

Adakite

Skarn

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1 Definition

1.1 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

Skarns are formed during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, and/or marine origin

1.2 History

1.2.1 Origin

Adak, Aleutian Islands

USA, Australia

1.2.2 Discoverer

Defant and Drummond

Tornebohm

1.3 Etymology

From Adak, Aleutian Islands

From an old Swedish mining term originally used to describe a type of silicate gangue or waste rock.

1.4 Class

Igneous Rocks

Metamorphic Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

1.5 Family

1.5.1 Group

Volcanic

Not Applicable

1.6 Other Categories

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Porphyritic

Earthy, Mud-rich, Rough

2.2 Color

Black, Brown, Light to Dark Grey

Black, Brown, Colourless, Green, Grey, White

2.3 Maintenance

Less

1.2 Durability

Durable

1.2.1 Water Resistant

✔ ✘

1.2.2 Scratch Resistant

✔ ✘

1.2.3 Stain Resistant

✔ ✘

1.2.4 Wind Resistant

✔ ✘

1.2.5 Acid Resistant

✔ ✘

1.3 Appearance

Dull and Soft

Dull

2 Uses

2.1 Architecture

2.1.1 Interior Uses

Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens

Decorative Aggregates, Entryways, Interior Decoration

2.1.2 Exterior Uses

As Building Stone, As Facing Stone, Office Buildings

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

2.1.3 Other Architectural Uses

Whetstones

Curbing

2.2 Industry

2.2.1 Construction Industry

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

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, Gold and Silver production, Manufacture of Magnesium and Dolomite Refractories

2.2.2 Medical Industry

Not Yet Used

Not Applicable

2.3 Antiquity Uses

Monuments, Sculpture, Small Figurines

Artifacts, Monuments, Sculpture

2.4 Other Uses

2.4.1 Commercial Uses

Commemorative Tablets, Pottery, Used in aquariums

Creating Artwork, Gemstone, Jewelry, Metallurgical Flux, Source of Magnesia (MgO)

3 Types

3.1 Types

Not Available

Endoskarns

3.2 Features

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

Host Rock for Lead, Zinc and Copper Deposits

3.3 Archaeological Significance

3.3.1 Monuments

Used

3.3.2 Famous Monuments

Data Not Available

3.3.3 Sculpture

Used

3.3.4 Famous Sculptures

Data Not Available

3.3.5 Pictographs

Used

Not Used

3.3.6 Petroglyphs

Used

Not Used

3.3.7 Figurines

Used

3.4 Fossils

Absent

4 Formation

4.1 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. Skarn is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

4.2 Composition

4.2.1 Mineral Content

Olivine, Plagioclase, Pyroxene

Calcite, Enstatite, Epidote, Garnet, Magnetite, Pyroxene, Titanite

4.2.2 Compound Content

Aluminium Oxide, MgO, Silicon Dioxide

Au, CaO, Carbon Dioxide, Cu, Fe, MgO

4.3 Transformation

4.3.1 Metamorphism

✔ ✘

4.3.2 Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

4.3.3 Weathering

✔ ✘

4.3.4 Types of Weathering

Chemical Weathering, Mechanical Weathering

Not Applicable

4.3.5 Erosion

✔ ✘

4.3.6 Types of Erosion

Coastal Erosion, Sea Erosion, Water Erosion

Not Applicable

5 Properties

5.1 Physical Properties

5.1.1 Hardness

3-46.5

1 7

5.1.7 Grain Size

Fine to Medium Grained

Fine Grained

5.1.9 Fracture

Conchoidal

Irregular

5.1.11 Streak

Bluish Black

Light to dark brown

5.1.12 Porosity

Less Porous

5.1.14 Luster

Grainy, Pearly and Vitreous

Waxy and Dull

5.1.16 Compressive Strength

NANA

0.15 450

5.2.2 Cleavage

Not Available

Slaty

5.2.3 Toughness

Not Available

2.4

5.2.4 Specific Gravity

Not Available2.86

0 8.4

5.2.8 Transparency

Opaque

5.2.9 Density

Not Available2.8-2.9 g/cm³

0 1400

3.2 Thermal Properties

3.2.1 Specific Heat Capacity

NA0.92 kJ/Kg K

0.14 3.2

6.1.2 Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

India, Russia

China, India, Russia, Saudi Arabia, South Korea, Sri Lanka

7.1.2 Africa

Ethiopia, Somalia, South Africa

South Africa, Western Africa

7.1.3 Europe

Iceland

United Kingdom

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada, USA

Canada

7.2.2 South America

Brazil

Brazil, Colombia, Paraguay

7.3 Deposits in Oceania Continent

7.3.1 Australia

Not Yet Found

Central Australia, Western Australia

Adakite vs Skarn Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Adakite and Skarn Reserves. 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. Skarns are formed during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, and/or marine origin. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Adakite vs Skarn information and Adakite vs Skarn characteristics in the upcoming sections.

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Adakite vs Skarn Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Adakite vs Skarn characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Adakite and Properties of Skarn. Learn more about Adakite vs Skarn in the next section. The interior uses of Adakite include Decorative aggregates, Floor tiles, Homes, Hotels and Kitchens whereas the interior uses of Skarn include Decorative aggregates, Entryways and Interior decoration. Due to some exceptional properties of Adakite and Skarn, they have various applications in construction industry. The uses of Adakite in construction industry include As dimension stone, Cobblestones, Rail track ballast, Roadstone and that of Skarn include 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, Gold and silver production, Manufacture of magnesium and dolomite refractories.

More about Adakite and Skarn

Here you can know more about Adakite and Skarn. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Adakite and Skarn consists of mineral content and compound content. The mineral content of Adakite includes Olivine, Plagioclase, Pyroxene and mineral content of Skarn includes Calcite, Enstatite, Epidote, Garnet, Magnetite, Pyroxene, Titanite. You can also check out the list of all . When we have to compare Adakite vs Skarn, the texture, color and appearance plays an important role in determining the type of rock. Adakite is available in black, brown, light to dark grey colors whereas, Skarn is available in black, brown, colourless, green, grey, white colors. Appearance of Adakite is Dull and Soft and that of Skarn is Dull. Properties of rock is another aspect for Adakite vs Skarn. The hardness of Adakite is 3-4 and that of Skarn is 6.5. The types of Adakite are Not Available whereas types of Skarn are Endoskarns. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Adakite is bluish black while that of Skarn is light to dark brown. The specific heat capacity of Adakite is Not Available and that of Skarn is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Adakite is heat resistant, pressure resistant, wear resistant whereas Skarn is heat resistant.