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Granulite vs Pseudotachylite


Pseudotachylite vs Granulite


Definition

Definition
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.  
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.  

History
  
  

Origin
Central Europe  
USA  

Discoverer
Unknown  
Unknown  

Etymology
From Latin granulum, a little grain or fine grained  
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.  

Class
Metamorphic Rocks  
Metamorphic Rocks  

Sub-Class
Durable Rock, Hard Rock  
Durable Rock, Hard Rock  

Family
  
  

Group
-  
-  

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

Texture

Texture
Granoblastic  
Quench  

Color
Black, Brown  
Black, Brown, Green, Grey, Pink, White  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
Yes  
No  

Wind Resistant
No  
Yes  

Acid Resistant
No  
Yes  

Appearance
Veined or Pebbled  
Dull and Soft  

Uses

Architecture
  
  

Interior Uses
Bathrooms, Countertops, Decorative Aggregates, Entryways, Flooring, Homes, Hotels, Interior Decoration, Kitchens, Stair Treads  
Decorative Aggregates, Entryways, Interior Decoration  

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

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
As Dimension Stone, Building houses or walls  
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Monuments, Sculpture  
Artifacts, Monuments  

Other Uses
  
  

Commercial Uses
Curling, Gemstone, Laboratory bench tops, Soil Conditioner, Tombstones  
Creating Artwork, Gemstone  

Types

Types
Metamorphic rock  
Cataclastic rock  

Features
Clasts are smooth to touch  
Host Rock for Lead  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Granulite is a fine-grained granular metamorphic rock in which the main component minerals are feldspars and quartz and forms at high temperature and pressure conditions.  
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Pseudotachylite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.  

Composition
  
  

Mineral Content
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Quartz  
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides  

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

Transformation
  
  

Metamorphism
No  
Yes  

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

Weathering
Yes  
No  

Types of Weathering
Biological Weathering, Chemical Weathering  
-  

Erosion
Yes  
No  

Types of Erosion
Chemical Erosion, Water Erosion, Wind Erosion  
-  

Properties

Physical Properties
  
  

Hardness
6-7  
7  

Grain Size
Medium to Coarse Grained  
Very fine-grained  

Fracture
-  
Uneven  

Streak
White  
Light to dark brown  

Porosity
Very Less Porous  
Less Porous  

Luster
Vitreous  
Vitreous  

Compressive Strength
175.00 N/mm2  
20
60.00 N/mm2  
37

Cleavage
-  
-  

Toughness
-  
-  

Specific Gravity
2.8-3.0  
2.46-2.86  

Transparency
Opaque  
Transparent to Translucent  

Density
3.06-3.33 g/cm3  
2.7-2.9 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.14 kJ/Kg K  
33
0.92 kJ/Kg K  
10

Resistance
Heat Resistant, Wear Resistant  
Heat Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam  
South Korea  

Africa
Angola, Egypt, Madagascar, Nigeria, South Africa  
Western Africa  

Europe
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic  
Great Britain, Switzerland  

Others
-  
-  

Deposits in Western Continents
  
  

North America
Canada, USA  
-  

South America
-  
-  

Deposits in Oceania Continent
  
  

Australia
-  
Central Australia, Western Australia  

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Granulite vs Pseudotachylite 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 Granulite and Pseudotachylite Reserves. Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.. Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. 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 Granulite vs Pseudotachylite information and Granulite vs Pseudotachylite characteristics in the upcoming sections.

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Granulite vs Pseudotachylite 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. Granulite vs Pseudotachylite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Granulite and Properties of Pseudotachylite. Learn more about Granulite vs Pseudotachylite in the next section. The interior uses of Granulite include Bathrooms, Countertops, Decorative aggregates, Entryways, Flooring, Homes, Hotels, Interior decoration, Kitchens and Stair treads whereas the interior uses of Pseudotachylite include Decorative aggregates, Entryways and Interior decoration. Due to some exceptional properties of Granulite and Pseudotachylite, they have various applications in construction industry. The uses of Granulite in construction industry include As dimension stone, Building houses or walls and that of Pseudotachylite include As dimension stone, Cement manufacture, For road aggregate, Making natural cement.

More about Granulite and Pseudotachylite

Here you can know more about Granulite and Pseudotachylite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Granulite and Pseudotachylite consists of mineral content and compound content. The mineral content of Granulite includes Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Quartz and mineral content of Pseudotachylite includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides. You can also check out the list of all Metamorphic Rocks. When we have to compare Granulite vs Pseudotachylite, the texture, color and appearance plays an important role in determining the type of rock. Granulite is available in black, brown colors whereas, Pseudotachylite is available in black, brown, green, grey, pink, white colors. Appearance of Granulite is Veined or Pebbled and that of Pseudotachylite is Dull and Soft. Properties of rock is another aspect for Granulite vs Pseudotachylite. The hardness of Granulite is 6-7 and that of Pseudotachylite is 7. The types of Granulite are Metamorphic rock whereas types of Pseudotachylite are Cataclastic rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Granulite is white while that of Pseudotachylite is light to dark brown. The specific heat capacity of Granulite is 0.14 kJ/Kg K and that of Pseudotachylite is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Granulite is heat resistant, wear resistant whereas Pseudotachylite is heat resistant.

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