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Blueschist vs Foidolite


Foidolite vs Blueschist


Definition

Definition
Blueschist is a metamorphic rock which is generally blue in color and is formed under conditions of high pressure and low temperature   
Foidolite is a rare type of coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%   

History
  
  

Origin
USA   
Unknown   

Discoverer
Edgar Bailey   
Unknown   

Etymology
From French schiste, Greek skhistos i.e. split   
From the mineral feldspathoid which is the main content of rock   

Class
Metamorphic Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture

Texture
Foliated   
Earthy   

Color
Blue, Bluish - Grey, Purple, Shades of Blue   
Black, Brown, Colourless, Green, Grey, Pink, White   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
No   

Scratch Resistant
No   
No   

Stain Resistant
No   
No   

Wind Resistant
No   
No   

Acid Resistant
No   
No   

Appearance
Dull and Banded   
Dull   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Not Yet Used   
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   
Taken as a Supplement for Calcium or Magnesium   

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

Other Uses
  
  

Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling, Tombstones   
Cemetery Markers, Commemorative Tablets, Creating Artwork   

Types

Types
Not Available   
Not Available   

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

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
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Used   
Used   

Fossils
Absent   
Absent   

Formation

Formation
Blueschist forms due to the metamorphism of basalt and other rocks with similar composition at high pressures and low temperatures and approximately corresponding to a depth of 15 to 30 kilometers and 200 to 500 °C.   
Foidolites 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.   

Composition
  
  

Mineral Content
Albite, Chlorite, Epidote, Garnet, Glaucophane, Lawsonite, Muscovite or Illite, Quartz   
Amphibole, Biotite, Feldspar, Olivine, Plagioclase, Pyroxene   

Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide   
Aluminium Oxide, CaO, Iron(III) Oxide, FeO   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism   

Weathering
Yes   
No   

Types of Weathering
Mechanical Weathering   
Not Applicable   

Erosion
Yes   
No   

Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion   
Not Applicable   

Properties

Physical Properties
  
  

Hardness
3.5-4   
1.5   

Grain Size
Fine to Medium Grained   
Medium to Fine Coarse Grained   

Fracture
Conchoidal   
Conchoidal   

Streak
White to Grey   
White   

Porosity
Highly Porous   
Very Less Porous   

Luster
Dull   
Subvitreous to Dull   

Cleavage
Slaty   
Perfect   

Toughness
1.5   
Not Available   

Specific Gravity
3-3.2   
2.86   

Transparency
Opaque   
Translucent   

Density
2.8-2.9 g/cm3   
Not Available   

Thermal Properties
  
  

Resistance
Impact Resistant, Pressure Resistant   
Heat Resistant, Wear Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
Japan, Turkey   
Russia   

Africa
Egypt, Ethiopia, South Africa   
South Africa, Western Africa   

Europe
France, Greece, Iceland   
Not Yet Found   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
USA   
Canada, USA   

South America
Not Yet Found   
Not Yet Found   

Deposits in Oceania Continent
  
  

Australia
New Zealand   
Central Australia, Western Australia   

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Blueschist vs Foidolite 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 Blueschist and Foidolite Reserves. Blueschist is a metamorphic rock which is generally blue in color and is formed under conditions of high pressure and low temperature. Foidolite is a rare type of coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%. 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 Blueschist vs Foidolite information and Blueschist vs Foidolite characteristics in the upcoming sections.

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

More about Blueschist and Foidolite

Here you can know more about Blueschist and Foidolite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Blueschist and Foidolite consists of mineral content and compound content. The mineral content of Blueschist includes Albite, Chlorite, Epidote, Garnet, Glaucophane, Lawsonite, Muscovite or Illite, Quartz and mineral content of Foidolite includes Amphibole, Biotite, Feldspar, Olivine, Plagioclase, Pyroxene. You can also check out the list of all Igneous Rocks. When we have to compare Blueschist vs Foidolite, the texture, color and appearance plays an important role in determining the type of rock. Blueschist is available in blue, bluish - grey, purple, shades of blue colors whereas, Foidolite is available in black, brown, colourless, green, grey, pink, white colors. Appearance of Blueschist is Dull and Banded and that of Foidolite is Dull. Properties of rock is another aspect for Blueschist vs Foidolite. The hardness of Blueschist is 3.5-4 and that of Foidolite is 1.5. The types of Blueschist are Not Available whereas types of Foidolite are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Blueschist is white to grey while that of Foidolite is white. The specific heat capacity of Blueschist is Not Available and that of Foidolite is Not Available. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Blueschist is impact resistant, pressure resistant whereas Foidolite is heat resistant, wear resistant.

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