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Norite
Norite

Skarn
Skarn



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Norite and Skarn

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1 Definition
1.1 Definition
Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine
Skarns are formed during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, and/or marine origin
2.2 History
2.2.1 Origin
Norway
USA, Australia
2.2.2 Discoverer
Unknown
Tornebohm
2.3 Etymology
From the Norwegian name for Norway, Norge
From an old Swedish mining term originally used to describe a type of silicate gangue or waste rock.
2.4 Class
Igneous Rocks
Metamorphic Rocks
2.4.1 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
2.5 Family
2.5.1 Group
Plutonic
Not Applicable
2.6 Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
3 Texture
3.1 Texture
Phaneritic
Earthy, Mud-rich, Rough
3.2 Color
Dark Grey to Black
Black, Brown, Colourless, Green, Grey, White
3.3 Maintenance
Less
Less
3.4 Durability
Durable
Durable
3.4.1 Water Resistant
3.4.2 Scratch Resistant
3.4.3 Stain Resistant
3.4.4 Wind Resistant
3.4.5 Acid Resistant
3.5 Appearance
Veined and Shiny
Dull
4 Uses
4.1 Architecture
4.1.1 Interior Uses
Decorative Aggregates, Entryways, Interior Decoration
Decorative Aggregates, Entryways, Interior Decoration
4.1.2 Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
4.1.3 Other Architectural Uses
Curbing
Curbing
4.2 Industry
4.2.1 Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate
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
4.2.2 Medical Industry
Not Yet Used
Not Applicable
4.3 Antiquity Uses
Artifacts, Monuments, Sculpture
Artifacts, Monuments, Sculpture
4.4 Other Uses
4.4.1 Commercial Uses
Cemetery Markers, Commemorative Tablets, Laboratory bench tops, Jewelry, Sea Defence, Tombstones
Creating Artwork, Gemstone, Jewelry, Metallurgical Flux, Source of Magnesia (MgO)
5 Types
5.1 Types
Not Available
Endoskarns
5.2 Features
Smooth to touch
Host Rock for Lead, Zinc and Copper Deposits
5.3 Archaeological Significance
5.3.1 Monuments
Used
Used
5.3.2 Famous Monuments
Data Not Available
Data Not Available
5.3.3 Sculpture
Used
Used
5.3.4 Famous Sculptures
Data Not Available
Data Not Available
5.3.5 Pictographs
Not Used
Not Used
5.3.6 Petroglyphs
Not Used
Not Used
5.3.7 Figurines
Used
Used
5.4 Fossils
Absent
Absent
6 Formation
6.1 Formation
Norite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.
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.
6.2 Composition
6.2.1 Mineral Content
Augite, Olivine, Plagioclase, Pyroxene
Calcite, Enstatite, Epidote, Garnet, Magnetite, Pyroxene, Titanite
6.2.2 Compound Content
Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide
Au, CaO, Carbon Dioxide, Cu, Fe, MgO
6.3 Transformation
6.3.1 Metamorphism
6.3.2 Types of Metamorphism
Cataclastic Metamorphism, Impact Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
6.3.3 Weathering
6.3.4 Types of Weathering
Biological Weathering
Not Applicable
6.3.5 Erosion
6.3.7 Types of Erosion
Chemical Erosion, Coastal Erosion
Not Applicable
7 Properties
7.1 Physical Properties
7.1.1 Hardness
76.5
Coal
1 7
7.1.6 Grain Size
Coarse Grained
Fine Grained
7.1.7 Fracture
Conchoidal
Irregular
7.1.8 Streak
Black
Light to dark brown
7.1.9 Porosity
Highly Porous
Less Porous
7.1.10 Luster
Not Available
Waxy and Dull
7.1.11 Compressive Strength
225.00 N/mm2NA
What Is Obsidian
0.15 450
7.1.17 Cleavage
Not Available
Slaty
7.1.18 Toughness
1.6
2.4
7.1.19 Specific Gravity
2.86-2.872.86
Granite
0 8.4
7.1.20 Transparency
Opaque
Opaque
7.1.21 Density
2.7-3.3 g/cm32.8-2.9 g/cm3
Granite
0 1400
7.3 Thermal Properties
7.3.1 Specific Heat Capacity
NA0.92 kJ/Kg K
What Is Granulite
0.14 3.2
8.3.2 Resistance
Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant
9 Reserves
9.1 Deposits in Eastern Continents
9.1.1 Asia
India, Russia
China, India, Russia, Saudi Arabia, South Korea, Sri Lanka
9.1.2 Africa
South Africa
South Africa, Western Africa
9.1.3 Europe
Germany, Greece, Italy, Scotland, Turkey
United Kingdom
9.1.4 Others
Greenland
Not Yet Found
9.2 Deposits in Western Continents
9.2.1 North America
Canada, USA
Canada
9.2.2 South America
Brazil, Colombia, Venezuela
Brazil, Colombia, Paraguay
9.3 Deposits in Oceania Continent
9.3.1 Australia
New Zealand, Queensland
Central Australia, Western Australia

All about Norite and Skarn Properties

Know all about Norite and Skarn properties here. All properties of rocks are important as they define the type of rock and its application. Norite belongs to Igneous Rocks while Skarn belongs to Metamorphic Rocks.Texture of Norite is Phaneritic whereas that of Skarn is Earthy, Mud-rich, Rough. Norite appears Veined and Shiny and Skarn appears Dull. The luster of Norite is not available while that of Skarn is waxy and dull. Norite is available in dark grey to black colors whereas Skarn is available in black, brown, colourless, green, grey, white colors. The commercial uses of Norite are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Skarn are creating artwork, gemstone, jewelry, metallurgical flux, source of magnesia (mgo).