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Anorthosite vs Schist


Schist vs Anorthosite


Definition

Definition
Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase  
Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation  

History
  
  

Origin
-  
-  

Discoverer
Unknown  
Unknown  

Etymology
From French anorthose plagioclase + -ite1  
From French schiste, Greek skhistos i.e. split  

Class
Igneous Rocks  
Metamorphic Rocks  

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

Family
  
  

Group
Plutonic  
-  

Other Categories
Coarse Grained Rock, Opaque Rock  
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock  

Texture

Texture
Foliated, Glassy  
Foliated, Platy  

Color
Black, Bluish - Grey, Brown, Green, Grey, Light Greenish Grey, Pink, White  
Black, Blue, Brown, Dark Brown, Green, Grey, Silver  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
No  
No  

Stain Resistant
No  
No  

Wind Resistant
Yes  
No  

Acid Resistant
No  
No  

Appearance
Layered, Banded, Veined and Shiny  
Layered and Shiny  

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration  
Decorative Aggregates, Floor Tiles, Interior Decoration  

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

Other Architectural Uses
Curbing  
-  

Industry
  
  

Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate  
As Dimension Stone, Building houses or walls, Cement Manufacture, for Road Aggregate, Roadstone  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Sculpture, Small Figurines  
Artifacts  

Other Uses
  
  

Commercial Uses
Creating Artwork, Curling  
Used in aquariums, Writing Slates  

Types

Types
Proterozoic Anorthosite and Archean Anorthosite  
Mica Schists, Calc-Silicate Schists, Graphite Schists, Blueschists, Whiteschists, Greenschists, Hornblende Schist, Talc Schist, Chlorite Schist, Garnet Schist, Glaucophane schist.  

Features
Generally rough to touch, Is one of the oldest rock  
Easily splits into thin plates, Smooth to touch  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Anorthosite is a phaneritic, intrusive igneous rock which is characterized by a predominance of plagioclase feldspar which is almost 90–100%, and a minimal mafic component.   
Schist formed by dynamic metamorphism at high temperatures and pressures that aligns the grains of mica, hornblende and other elongated minerals into thin layers.  

Composition
  
  

Mineral Content
Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene  
Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc  

Compound Content
Ca, CaO, Chromium(III) Oxide, MgO, Sulfur Trioxide  
CaO, Carbon Dioxide, MgO  

Transformation
  
  

Metamorphism
Yes  
No  

Types of Metamorphism
Cataclastic Metamorphism, Contact Metamorphism  
-  

Weathering
Yes  
Yes  

Types of Weathering
Biological Weathering  
Biological Weathering, Chemical Weathering, Mechanical Weathering  

Erosion
Yes  
Yes  

Types of Erosion
Chemical Erosion, Wind Erosion  
Chemical Erosion, Coastal Erosion, Glacier Erosion  

Properties

Physical Properties
  
  

Hardness
5-6  
3.5-4  

Grain Size
Coarse Grained  
Medium to Fine Coarse Grained  

Fracture
Irregular  
Conchoidal  

Streak
White  
White  

Porosity
Less Porous  
Highly Porous  

Luster
Pearly to Subvitreous  
Shiny  

Compressive Strength
180.00 N/mm2  
18
150.00 N/mm2  
22

Cleavage
-  
Slaty  

Toughness
-  
1.5  

Specific Gravity
2.62-2.82  
2.5-2.9  

Transparency
Translucent  
Opaque  

Density
2.7-4 g/cm3  
2.8-2.9 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.84 kJ/Kg K  
15
0.70 kJ/Kg K  
24

Resistance
Heat Resistant, Impact Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant  
Impact Resistant, Pressure Resistant, Water Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
-  
Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam  

Africa
-  
Egypt, Ethiopia, Morocco, Nigeria, South Africa  

Europe
Bulgaria, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Malta, Poland, Portugal, Romania, Slovenia, Spain, Sweden, The Czech Republic  
Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland  

Others
-  
-  

Deposits in Western Continents
  
  

North America
Canada  
Canada, Costa Rica, Cuba, Mexico, Panama, USA  

South America
Bolivia, Colombia  
Brazil, Colombia, Guyana  

Deposits in Oceania Continent
  
  

Australia
Central Australia, South Australia, Western Australia  
New South Wales, New Zealand, Queensland  

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Anorthosite vs Schist 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 Anorthosite and Schist Reserves. Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase. Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation. 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 Anorthosite vs Schist information and Anorthosite vs Schist characteristics in the upcoming sections.

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Anorthosite vs Schist 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. Anorthosite vs Schist characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Anorthosite and Properties of Schist. Learn more about Anorthosite vs Schist in the next section. The interior uses of Anorthosite include Decorative aggregates, Floor tiles, Homes and Interior decoration whereas the interior uses of Schist include Decorative aggregates, Floor tiles and Interior decoration. Due to some exceptional properties of Anorthosite and Schist, they have various applications in construction industry. The uses of Anorthosite in construction industry include As dimension stone, Cement manufacture, For road aggregate and that of Schist include As dimension stone, Building houses or walls, Cement manufacture, For road aggregate, Roadstone.

More about Anorthosite and Schist

Here you can know more about Anorthosite and Schist. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Anorthosite and Schist consists of mineral content and compound content. The mineral content of Anorthosite includes Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene and mineral content of Schist includes Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc. You can also check out the list of all Igneous Rocks. When we have to compare Anorthosite vs Schist, the texture, color and appearance plays an important role in determining the type of rock. Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors whereas, Schist is available in black, blue, brown, dark brown, green, grey, silver colors. Appearance of Anorthosite is Layered, Banded, Veined and Shiny and that of Schist is Layered and Shiny. Properties of rock is another aspect for Anorthosite vs Schist. The hardness of Anorthosite is 5-6 and that of Schist is 3.5-4. The types of Anorthosite are Proterozoic Anorthosite and Archean Anorthosite whereas types of Schist are Mica Schists, Calc-Silicate Schists, Graphite Schists, Blueschists, Whiteschists, Greenschists, Hornblende Schist, Talc Schist, Chlorite Schist, Garnet Schist, Glaucophane schist.. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Anorthosite and Schist is white. The specific heat capacity of Anorthosite is 0.84 kJ/Kg K and that of Schist is 0.70 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Anorthosite is heat resistant, impact resistant, pressure resistant, scratch resistant, wear resistant whereas Schist is impact resistant, pressure resistant, water resistant.

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