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Pseudotachylite vs Borolanite


Borolanite vs Pseudotachylite


Definition

Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.  
Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix  

History
  
  

Origin
USA  
Scotland  

Discoverer
Unknown  
Unknown  

Etymology
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.  
From Alkalic Igneous complex near Loch Borralan in northwest Scotland  

Class
Metamorphic Rocks  
Igneous Rocks  

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

Family
  
  

Group
-  
Plutonic  

Other Categories
Fine Grained Rock, Opaque Rock  
Fine Grained Rock, Opaque Rock  

Texture

Texture
Quench  
Granular  

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

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
No  

Stain Resistant
No  
No  

Wind Resistant
Yes  
Yes  

Acid Resistant
Yes  
Yes  

Appearance
Dull and Soft  
Banded and Foilated  

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Entryways, Interior Decoration  
Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration  

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

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement  
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Monuments  
Artifacts  

Other Uses
  
  

Commercial Uses
Creating Artwork, Gemstone  
Cemetery Markers  

Types

Types
Cataclastic rock  
-  

Features
Host Rock for Lead  
Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock  

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.  
Borolanites are formed due to alkaline igneous activities and are generally formed in thick continental crustal areas or in Cordilleran subduction zones.  

Composition
  
  

Mineral Content
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides  
Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite  

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

Transformation
  
  

Metamorphism
Yes  
Yes  

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

Weathering
No  
Yes  

Types of Weathering
-  
Chemical Weathering, Mechanical Weathering  

Erosion
No  
Yes  

Types of Erosion
-  
Wind Erosion  

Properties

Physical Properties
  
  

Hardness
7  
5.5-6  

Grain Size
Very fine-grained  
Fine Grained  

Fracture
Uneven  
Conchoidal to Uneven  

Streak
Light to dark brown  
White  

Porosity
Less Porous  
Less Porous  

Luster
Vitreous  
Greasy to Dull  

Compressive Strength
60.00 N/mm2  
37
150.00 N/mm2  
22

Cleavage
-  
-  

Toughness
-  
-  

Specific Gravity
2.46-2.86  
2.6  

Transparency
Transparent to Translucent  
Translucent to Opaque  

Density
2.7-2.9 g/cm3  
2.6 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.92 kJ/Kg K  
10
0.84 kJ/Kg K  
15

Resistance
Heat Resistant  
Heat Resistant, Impact Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
South Korea  
Indonesia, Iran, Russia, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Turkmenistan, Vietnam  

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

Europe
Great Britain, Switzerland  
Andorra, Finland, France, Great Britain, Italy, Norway, Portugal, Spain, Sweden  

Others
-  
Greenland  

Deposits in Western Continents
  
  

North America
-  
Canada, USA  

South America
-  
Brazil, Chile, Colombia, Uruguay, Venezuela  

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia  
New Zealand, Queensland, South Australia, Tasmania, Western Australia  

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Pseudotachylite vs Borolanite 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 Borolanite Reserves. Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix. 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 Borolanite information and Pseudotachylite vs Borolanite characteristics in the upcoming sections.

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Pseudotachylite vs Borolanite 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 Borolanite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Pseudotachylite and Properties of Borolanite. Learn more about Pseudotachylite vs Borolanite in the next section. The interior uses of Pseudotachylite include Decorative aggregates, Entryways and Interior decoration whereas the interior uses of Borolanite include Countertops, Decorative aggregates, Flooring, Homes and Interior decoration. Due to some exceptional properties of Pseudotachylite and Borolanite, 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 Borolanite include As dimension stone, Cement manufacture, Construction aggregate, For road aggregate, Landscaping, Making natural cement, Manufacture of magnesium and dolomite refractories, Production of glass and ceramics.

More about Pseudotachylite and Borolanite

Here you can know more about Pseudotachylite and Borolanite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Pseudotachylite and Borolanite consists of mineral content and compound content. The mineral content of Pseudotachylite includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides and mineral content of Borolanite includes Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite. You can also check out the list of all Metamorphic Rocks. When we have to compare Pseudotachylite vs Borolanite, 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, Borolanite is available in brown, buff, cream, green, grey, pink, white colors. Appearance of Pseudotachylite is Dull and Soft and that of Borolanite is Banded and Foilated. Properties of rock is another aspect for Pseudotachylite vs Borolanite. The hardness of Pseudotachylite is 7 and that of Borolanite is 5.5-6. The types of Pseudotachylite are Cataclastic rock whereas types of Borolanite 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 Borolanite is white. The specific heat capacity of Pseudotachylite is 0.92 kJ/Kg K and that of Borolanite 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.Pseudotachylite is heat resistant whereas Borolanite is heat resistant, impact resistant, wear resistant.

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