Skarn

Mugearite

Skarn and Mugearite

Skarn

Mugearite

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1 Definition

1.1 Definition

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

Mugearite is a type of oligoclase bearing basalt, also comprising of olivine, apatite, and opaque oxides

1.2 History

1.2.1 Origin

USA, Australia

Skye, Scotland

1.2.2 Discoverer

Tornebohm

Alfred Harker

1.3 Etymology

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

From mugear +‎ -ite

1.4 Class

Metamorphic Rocks

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Not Applicable

Volcanic

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Opaque Rock

2 Texture

2.1 Texture

Earthy, Mud-rich, Rough

Glassy, Massive, Porphyritic, Scoriaceous, Vesicular

2.2 Color

Black, Brown, Colourless, Green, Grey, 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

Dull and Soft

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Entryways, Interior Decoration

Floor Tiles, Flooring, Homes, Hotels

3.1.2 Exterior Uses

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

As Building Stone, Garden Decoration

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

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

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

3.2.2 Medical Industry

Not Applicable

Not Yet Used

3.3 Antiquity Uses

Artifacts, Monuments, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

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

Creating Artwork

4 Types

4.1 Types

Endoskarns

Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite

4.2 Features

Host Rock for Lead, Zinc and Copper Deposits

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

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

Used

4.3.6 Petroglyphs

Not Used

Used

4.3.7 Figurines

Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

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.

Mugearite forms when lava reaches the Earth's surface near an active volcano. The temperature of lava is between 1100 to 1250° C when it gets to the surface.

5.2 Composition

5.2.1 Mineral Content

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

Olivine, Plagioclase, Pyroxene

5.2.2 Compound Content

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

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

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

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

Burial Metamorphism, Impact Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Not Applicable

Biological Weathering, Chemical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Not Applicable

6 Properties

6.1 Physical Properties

6.1.1 Hardness

6.56

1 7

6.1.2 Grain Size

Fine Grained

Not Applicable

6.1.3 Fracture

Irregular

Conchoidal

6.1.4 Streak

Light to dark brown

White to Grey

6.1.5 Porosity

Less Porous

6.1.6 Luster

Waxy and Dull

Not Available

6.1.7 Compressive Strength

NA37.50 N/mm²

0.15 450

6.1.8 Cleavage

Slaty

Not Applicable

6.1.9 Toughness

2.4

2.3

6.1.10 Specific Gravity

2.862.8-3

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

2.8-2.9 g/cm³2.9-3.1 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

0.92 kJ/Kg K0.84 kJ/Kg K

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

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

India, Russia

7.1.2 Africa

South Africa, Western Africa

South Africa

7.1.3 Europe

United Kingdom

Iceland

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada

Canada, USA

7.2.2 South America

Brazil, Colombia, Paraguay

Brazil

7.3 Deposits in Oceania Continent

7.3.1 Australia

Central Australia, Western Australia

Not Yet Found

All about Skarn and Mugearite Properties

Know all about Skarn and Mugearite properties here. All properties of rocks are important as they define the type of rock and its application. Skarn belongs to Metamorphic Rocks while Mugearite belongs to Igneous Rocks.Texture of Skarn is Earthy, Mud-rich, Rough whereas that of Mugearite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Skarn appears Dull and Mugearite appears Dull and Soft. The luster of Skarn is waxy and dull while that of Mugearite is not available. Skarn is available in black, brown, colourless, green, grey, white colors whereas Mugearite is available in black, brown, light to dark grey colors. The commercial uses of Skarn and Mugearite are creating artwork, gemstone, jewelry, metallurgical flux, source of magnesia (mgo).