Granulite

Skarn

Granulite vs Skarn

Granulite

Skarn

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1 Definition

1.1 Definition

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

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

Central Europe

USA, Australia

1.2.2 Discoverer

Unknown

Tornebohm

1.3 Etymology

From Latin granulum, a little grain or fine grained

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

1.4 Class

Metamorphic Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

1.5 Family

1.5.1 Group

Not Applicable

1.6 Other Categories

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Granoblastic

Earthy, Mud-rich, Rough

2.2 Color

Black, Brown

Black, Brown, Colourless, Green, Grey, White

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

✔ ✘

2.4.6 Acid Resistant

✔ ✘

2.5 Appearance

Veined or Pebbled

Dull

3 Uses

3.1 Architecture

3.1.1 Interior Uses

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

Decorative Aggregates, Entryways, Interior Decoration

3.1.2 Exterior Uses

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

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

3.1.4 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

As Dimension Stone, Building houses or walls

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

3.2.2 Medical Industry

Not Yet Used

Not Applicable

3.3 Antiquity Uses

Artifacts, Monuments, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

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

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

4 Types

4.1 Types

Not Available

Endoskarns

4.2 Features

Clasts are smooth to touch

Host Rock for Lead, Zinc and Copper Deposits

4.3 Archaeological Significance

4.3.1 Monuments

Used

4.3.2 Famous Monuments

Data Not Available

4.3.3 Sculpture

Used

4.3.4 Famous Sculptures

Data Not Available

4.3.5 Pictographs

Not Used

4.3.6 Petroglyphs

Not Used

4.3.7 Figurines

Used

4.4 Fossils

Absent

5 Formation

5.1 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.

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.

5.2 Composition

5.2.1 Mineral Content

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

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

5.2.2 Compound Content

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

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

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Not Applicable

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

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering

Not Applicable

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Not Applicable

6 Properties

6.1 Physical Properties

6.1.1 Hardness

6-76.5

1 7

6.1.4 Grain Size

Medium to Coarse Grained

Fine Grained

6.1.5 Fracture

Not Available

Irregular

6.1.6 Streak

White

Light to dark brown

6.1.7 Porosity

Very Less Porous

Less Porous

6.1.8 Luster

Vitreous

Waxy and Dull

6.1.9 Compressive Strength

175.00 N/mm²NA

0.15 450

6.1.10 Cleavage

Imperfect

Slaty

6.1.11 Toughness

Not Available

2.4

6.1.12 Specific Gravity

2.8-3.02.86

0 8.4

6.2.2 Transparency

Opaque

6.2.3 Density

3.06-3.33 g/cm³2.8-2.9 g/cm³

0 1400

6.3 Thermal Properties

6.3.1 Specific Heat Capacity

0.14 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

7.3.2 Resistance

Heat Resistant, Wear Resistant

Heat Resistant

8 Reserves

8.1 Deposits in Eastern Continents

8.1.1 Asia

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

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

8.1.2 Africa

Angola, Egypt, Madagascar, Nigeria, South Africa

South Africa, Western Africa

8.1.3 Europe

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

United Kingdom

8.1.4 Others

Not Yet Found

8.2 Deposits in Western Continents

8.2.1 North America

Canada, USA

Canada

8.2.2 South America

Not Yet Found

Brazil, Colombia, Paraguay

8.3 Deposits in Oceania Continent

8.3.1 Australia

Not Yet Found

Central Australia, Western Australia

Granulite 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 Granulite and Skarn Reserves. Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.. 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 Granulite vs Skarn information and Granulite vs Skarn characteristics in the upcoming sections.

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Granulite 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. Granulite vs Skarn characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Granulite and Properties of Skarn. Learn more about Granulite vs Skarn in the next section. The interior uses of Granulite include Bathrooms, Countertops, Decorative aggregates, Entryways, Flooring, Homes, Hotels, Interior decoration, Kitchens and Stair treads whereas the interior uses of Skarn include Decorative aggregates, Entryways and Interior decoration. Due to some exceptional properties of Granulite and Skarn, they have various applications in construction industry. The uses of Granulite in construction industry include As dimension stone, Building houses or walls 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 Granulite and Skarn

Here you can know more about Granulite and Skarn. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Granulite and Skarn consists of mineral content and compound content. The mineral content of Granulite includes Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Quartz and mineral content of Skarn includes Calcite, Enstatite, Epidote, Garnet, Magnetite, Pyroxene, Titanite. You can also check out the list of all Metamorphic Rocks. When we have to compare Granulite vs Skarn, the texture, color and appearance plays an important role in determining the type of rock. Granulite is available in black, brown colors whereas, Skarn is available in black, brown, colourless, green, grey, white colors. Appearance of Granulite is Veined or Pebbled and that of Skarn is Dull. Properties of rock is another aspect for Granulite vs Skarn. The hardness of Granulite is 6-7 and that of Skarn is 6.5. The types of Granulite 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 Granulite is white while that of Skarn is light to dark brown. The specific heat capacity of Granulite is 0.14 kJ/Kg K 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.Granulite is heat resistant, wear resistant whereas Skarn is heat resistant.