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Pseudotachylite vs Granulite


Granulite vs Pseudotachylite


Definition

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

History
  
  

Origin
USA  
Central Europe  

Discoverer
Unknown  
Unknown  

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

Class
Metamorphic Rocks  
Metamorphic Rocks  

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

Family
  
  

Group
-  
-  

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

Texture

Texture
Quench  
Granoblastic  

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

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
No  
Yes  

Wind Resistant
Yes  
No  

Acid Resistant
Yes  
No  

Appearance
Dull and Soft  
Veined or Pebbled  

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

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

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Monuments  
Artifacts, Monuments, Sculpture  

Other Uses
  
  

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

Types

Types
Cataclastic rock  
Metamorphic rock  

Features
Host Rock for Lead  
Clasts are smooth to touch  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
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.  
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.  

Composition
  
  

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

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

Transformation
  
  

Metamorphism
Yes  
No  

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

Weathering
No  
Yes  

Types of Weathering
-  
Biological Weathering, Chemical Weathering  

Erosion
No  
Yes  

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

Properties

Physical Properties
  
  

Hardness
7  
6-7  

Grain Size
Very fine-grained  
Medium to Coarse Grained  

Fracture
Uneven  
-  

Streak
Light to dark brown  
White  

Porosity
Less Porous  
Very Less Porous  

Luster
Vitreous  
Vitreous  

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

Cleavage
-  
-  

Toughness
-  
-  

Specific Gravity
2.46-2.86  
2.8-3.0  

Transparency
Transparent to Translucent  
Opaque  

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

Thermal Properties
  
  

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

Resistance
Heat Resistant  
Heat Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

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

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

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

Others
-  
-  

Deposits in Western Continents
  
  

North America
-  
Canada, USA  

South America
-  
-  

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia  
-  

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

Compare Metamorphic Rocks

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

More about Pseudotachylite and Granulite

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

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