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Schist vs Anorthosite


Anorthosite vs Schist


Definition

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

History
  
  

Discoverer
Unknown   
Unknown   

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

Class
Metamorphic Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture

Texture
Foliated, Platy   
Foliated, Glassy   

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

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
No   
No   

Stain Resistant
No   
No   

Wind Resistant
No   
Yes   

Acid Resistant
No   
No   

Appearance
Layered and Shiny   
Layered, Banded, Veined and Shiny   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Not Yet Used   
Curbing   

Industry
  
  

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

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts   
Artifacts, Sculpture, Small Figurines   

Other Uses
  
  

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

Types

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

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

Archaeological Significance
  
  

Monuments
Not Yet Used   
Not Yet Used   

Famous Monuments
Not Applicable   
Not Applicable   

Sculpture
Not Yet Used   
Used   

Famous Sculptures
Not Applicable   
Not Applicable   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Not Yet Used   
Used   

Fossils
Absent   
Absent   

Formation

Formation
Schist formed by dynamic metamorphism at high temperatures and pressures that aligns the grains of mica, hornblende and other elongated minerals into thin layers.   
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.   

Composition
  
  

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

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

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Cataclastic Metamorphism, Contact Metamorphism   

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
3.5-4   
5-6   

Grain Size
Medium to Fine Coarse Grained   
Coarse Grained   

Fracture
Conchoidal   
Irregular   

Streak
White   
White   

Porosity
Highly Porous   
Less Porous   

Luster
Shiny   
Pearly to Subvitreous   

Cleavage
Slaty   
Irregular   

Toughness
1.5   
Not Available   

Specific Gravity
2.5-2.9   
2.62-2.82   

Transparency
Opaque   
Translucent   

Density
2.8-2.9 g/cm3   
2.7-4 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.84 kJ/Kg K   
15

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam   
Not Yet Found   

Africa
Egypt, Ethiopia, Morocco, Nigeria, South Africa   
Not Yet Found   

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

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

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

South America
Brazil, Colombia, Guyana   
Bolivia, Colombia   

Deposits in Oceania Continent
  
  

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

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

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

More about Schist and Anorthosite

Here you can know more about Schist and Anorthosite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Schist and Anorthosite consists of mineral content and compound content. The mineral content of Schist includes Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc and mineral content of Anorthosite includes Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene. You can also check out the list of all Metamorphic Rocks. When we have to compare Schist vs Anorthosite, the texture, color and appearance plays an important role in determining the type of rock. Schist is available in black, blue, brown, dark brown, green, grey, silver colors whereas, Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors. Appearance of Schist is Layered and Shiny and that of Anorthosite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Schist vs Anorthosite. The hardness of Schist is 3.5-4 and that of Anorthosite is 5-6. The types of Schist are Mica Schists, Calc-Silicate Schists, Graphite Schists, Blueschists, Whiteschists, Greenschists, Hornblende Schist, Talc Schist, Chlorite Schist, Garnet Schist, Glaucophane schist. whereas types of Anorthosite are Proterozoic Anorthosite and Archean Anorthosite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Schist and Anorthosite is white. The specific heat capacity of Schist is Not Available and that of Anorthosite is 0.84 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Schist is impact resistant, pressure resistant, water resistant whereas Anorthosite is heat resistant, impact resistant, pressure resistant, scratch resistant, wear resistant.

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