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Shoshonite vs Anorthosite


Anorthosite vs Shoshonite


Definition

Definition
Shoshonite is a basaltic rock, properly a potassic trachyandesite, composed of olivine, augite and plagioclase phenocrysts in a groundmass with calcic plagioclase and sanidine and some dark-colored volcanic glass   
Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase   

History
  
  

Origin
Wyoming,USA   
Unknown   

Discoverer
Iddings   
Unknown   

Etymology
From the place of origin called Shoshone riverin Wyoming   
From French anorthose plagioclase + -ite1   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Volcanic   
Plutonic   

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

Texture

Texture
Porphyritic   
Foliated, Glassy   

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

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
No   

Stain Resistant
Yes   
No   

Wind Resistant
Yes   
Yes   

Acid Resistant
Yes   
No   

Appearance
Dull   
Layered, Banded, Veined and Shiny   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone   
As Dimension Stone, Cement Manufacture, for Road Aggregate   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Sculpture   
Artifacts, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Cemetery Markers, Creating Artwork   
Creating Artwork, Curling   

Types

Types
Not Available   
Proterozoic Anorthosite and Archean Anorthosite   

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

Famous Sculptures
Data Not Available   
Not Applicable   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Used   
Used   

Fossils
Absent   
Absent   

Formation

Formation
Shoshonite 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.   
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
Pyroxene   
Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene   

Compound Content
Aluminium Oxide, Iron(III) Oxide, Potassium Oxide, Sodium Oxide, Titanium Dioxide   
Ca, CaO, Chromium(III) Oxide, MgO, Sulfur Trioxide   

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism   
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
6   
5-6   

Grain Size
Medium to Fine Coarse Grained   
Coarse Grained   

Fracture
Uneven   
Irregular   

Streak
White to Grey   
White   

Porosity
Less Porous   
Less Porous   

Luster
Dull   
Pearly to Subvitreous   

Cleavage
Poor   
Irregular   

Toughness
1.6   
Not Available   

Specific Gravity
2.98   
2.62-2.82   

Transparency
Opaque   
Translucent   

Density
2.9-3 g/cm3   
2.7-4 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.84 kJ/Kg K   
15

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

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Russia   
Not Yet Found   

Africa
South Africa   
Not Yet Found   

Europe
Iceland   
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, USA   
Canada   

South America
Brazil   
Bolivia, Colombia   

Deposits in Oceania Continent
  
  

Australia
Not Yet Found   
Central Australia, South Australia, Western Australia   

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Shoshonite 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 Shoshonite and Anorthosite Reserves. Shoshonite is a basaltic rock, properly a potassic trachyandesite, composed of olivine, augite and plagioclase phenocrysts in a groundmass with calcic plagioclase and sanidine and some dark-colored volcanic glass. 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 Shoshonite vs Anorthosite information and Shoshonite vs Anorthosite characteristics in the upcoming sections.

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

More about Shoshonite and Anorthosite

Here you can know more about Shoshonite and Anorthosite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Shoshonite and Anorthosite consists of mineral content and compound content. The mineral content of Shoshonite includes Pyroxene and mineral content of Anorthosite includes Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene. You can also check out the list of all Igneous Rocks. When we have to compare Shoshonite vs Anorthosite, the texture, color and appearance plays an important role in determining the type of rock. Shoshonite is available in brown- black, dark brown colors whereas, Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors. Appearance of Shoshonite is Dull and that of Anorthosite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Shoshonite vs Anorthosite. The hardness of Shoshonite is 6 and that of Anorthosite is 5-6. The types of Shoshonite are Not Available 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 Shoshonite is white to grey while that of Anorthosite is white. The specific heat capacity of Shoshonite 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.Shoshonite is heat resistant, pressure resistant whereas Anorthosite is heat resistant, impact resistant, pressure resistant, scratch resistant, wear resistant.

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