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Skarn and Mugearite


Mugearite and Skarn


Definition

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   

History
  
  

Origin
USA, Australia   
Skye, Scotland   

Discoverer
Tornebohm   
Alfred Harker   

Etymology
From an old Swedish mining term originally used to describe a type of silicate gangue or waste rock.   
From mugear +‎ -ite   

Class
Metamorphic Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Medium Hardness Rock   

Family
  
  

Group
Not Applicable   
Volcanic   

Other Categories
Fine Grained Rock, Opaque Rock   
Opaque Rock   

Texture

Texture
Earthy, Mud-rich, Rough   
Glassy, Massive, Porphyritic, Scoriaceous, Vesicular   

Color
Black, Brown, Colourless, Green, Grey, White   
Black, Brown, Light to Dark Grey   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
No   
Yes   

Wind Resistant
Yes   
No   

Acid Resistant
Yes   
No   

Appearance
Dull   
Dull and Soft   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Entryways, Interior Decoration   
Floor Tiles, Flooring, Homes, Hotels   

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

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   

Medical Industry
Not Applicable   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments, Sculpture   
Artifacts, Monuments, Sculpture   

Other Uses
  
  

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

Types

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

Features
Host Rock for Lead, Zinc and Copper Deposits   
Has High structural resistance against erosion and climate, Very fine grained rock   

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Not Used   
Used   

Petroglyphs
Not Used   
Used   

Figurines
Used   
Used   

Fossils
Absent   
Absent   

Formation

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.   

Composition
  
  

Mineral Content
Calcite, Enstatite, Epidote, Garnet, Magnetite, Pyroxene, Titanite   
Olivine, Plagioclase, Pyroxene   

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   

Transformation
  
  

Metamorphism
Yes   
Yes   

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

Weathering
No   
Yes   

Types of Weathering
Not Applicable   
Biological Weathering, Chemical Weathering   

Erosion
No   
No   

Types of Erosion
Not Applicable   
Not Applicable   

Properties

Physical Properties
  
  

Hardness
6.5   
6   

Grain Size
Fine Grained   
Not Applicable   

Fracture
Irregular   
Conchoidal   

Streak
Light to dark brown   
White to Grey   

Porosity
Less Porous   
Less Porous   

Luster
Waxy and Dull   
Not Available   

Compressive Strength
Not Available   
37.50 N/mm2   
27

Cleavage
Slaty   
Not Applicable   

Toughness
2.4   
2.3   

Specific Gravity
2.86   
2.8-3   

Transparency
Opaque   
Opaque   

Density
2.8-2.9 g/cm3   
2.9-3.1 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.92 kJ/Kg K   
10
0.84 kJ/Kg K   
15

Resistance
Heat Resistant   
Heat Resistant, Pressure Resistant, Wear Resistant   

Reserves

Deposits in Eastern Continents
  
  

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

Africa
South Africa, Western Africa   
South Africa   

Europe
United Kingdom   
Iceland   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada   
Canada, USA   

South America
Brazil, Colombia, Paraguay   
Brazil   

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia   
Not Yet Found   

Summary >>
<< Reserves

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).

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