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Pseudotachylite vs Jasperoid


Jasperoid vs Pseudotachylite


Definition

Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.  
Jasperoid is a rare, peculiar type of metasomatic alteration of rocks  

History
  
  

Origin
USA  
USA  

Discoverer
Unknown  
Unknown  

Etymology
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.  
From silica, the main mineral content of Jasperoid  

Class
Metamorphic Rocks  
Sedimentary Rocks  

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

Family
  
  

Group
-  
-  

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

Texture

Texture
Quench  
Earthy  

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

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  
Glassy or Pearly  

Uses

Architecture
  
  

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

Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration  
As Building 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 a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics, Serves as an Oil and Gas Reservoir rock  

Medical Industry
-  
Taken as a Supplement for Calcium or Magnesium  

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

Other Uses
  
  

Commercial Uses
Creating Artwork, Gemstone  
An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)  

Types

Types
Cataclastic rock  
-  

Features
Host Rock for Lead  
Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Present  

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.  
Jasperoid is a rare and peculiar type of metasomatic alteration of rocks. It is formed by extreme alteration of wall rocks within a shear zone which may occur in sediments, andesites, trachytes and basalts.  

Composition
  
  

Mineral Content
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides  
Clay Minerals, Pyrite, Quartz, Sulfides  

Compound Content
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur  
NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO  

Transformation
  
  

Metamorphism
Yes  
Yes  

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism  
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism  

Weathering
No  
No  

Types of Weathering
-  
-  

Erosion
No  
No  

Types of Erosion
-  
-  

Properties

Physical Properties
  
  

Hardness
7  
3.5-4  

Grain Size
Very fine-grained  
Medium to Fine Coarse Grained  

Fracture
Uneven  
Conchoidal  

Streak
Light to dark brown  
White  

Porosity
Less Porous  
Less Porous  

Luster
Vitreous  
Vitreous and Pearly  

Compressive Strength
60.00 N/mm2  
37
140.00 N/mm2  
23

Cleavage
-  
Perfect  

Toughness
-  
1  

Specific Gravity
2.46-2.86  
2.8-3  

Transparency
Transparent to Translucent  
Transparent to Translucent  

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

Thermal Properties
  
  

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

Resistance
Heat Resistant  
Heat Resistant, Pressure Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
South Korea  
China, India  

Africa
Western Africa  
Morocco, Namibia  

Europe
Great Britain, Switzerland  
Austria, Italy, Romania, Spain, Switzerland  

Others
-  
-  

Deposits in Western Continents
  
  

North America
-  
Mexico, USA  

South America
-  
Brazil, Colombia  

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia  
New South Wales, Queensland, Yorke Peninsula  

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Pseudotachylite vs Jasperoid 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 Jasperoid Reserves. Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. Jasperoid is a rare, peculiar type of metasomatic alteration of rocks. 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 Jasperoid information and Pseudotachylite vs Jasperoid characteristics in the upcoming sections.

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Pseudotachylite vs Jasperoid 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 Jasperoid characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Pseudotachylite and Properties of Jasperoid. Learn more about Pseudotachylite vs Jasperoid in the next section. The interior uses of Pseudotachylite include Decorative aggregates, Entryways and Interior decoration whereas the interior uses of Jasperoid include Decorative aggregates, Floor tiles, Homes and Interior decoration. Due to some exceptional properties of Pseudotachylite and Jasperoid, 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 Jasperoid include As a flux in the production of steel and pig iron, As a sintering agent in steel industry to process iron ore, As dimension stone, Cement manufacture, For road aggregate, Making natural cement, Manufacture of magnesium and dolomite refractories, Production of glass and ceramics, Serves as an oil and gas reservoir rock.

More about Pseudotachylite and Jasperoid

Here you can know more about Pseudotachylite and Jasperoid. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Pseudotachylite and Jasperoid consists of mineral content and compound content. The mineral content of Pseudotachylite includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides and mineral content of Jasperoid includes Clay Minerals, Pyrite, Quartz, Sulfides. You can also check out the list of all Metamorphic Rocks. When we have to compare Pseudotachylite vs Jasperoid, 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, Jasperoid is available in black, brown, green, grey, pink, white colors. Appearance of Pseudotachylite is Dull and Soft and that of Jasperoid is Glassy or Pearly. Properties of rock is another aspect for Pseudotachylite vs Jasperoid. The hardness of Pseudotachylite is 7 and that of Jasperoid is 3.5-4. The types of Pseudotachylite are Cataclastic rock whereas types of Jasperoid are -. 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 Jasperoid is white. The specific heat capacity of Pseudotachylite is 0.92 kJ/Kg K and that of Jasperoid 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.Pseudotachylite is heat resistant whereas Jasperoid is heat resistant, pressure resistant, wear resistant.

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