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Pseudotachylite vs Limestone


Limestone vs Pseudotachylite


Definition

Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.  
Limestone is a sedimentary rock composed mostly of calcite and aragonite, which are different crystal forms of calcium carbonate  

History
  
  

Origin
USA  
New Zealand  

Discoverer
Unknown  
Belsazar Hacquet  

Etymology
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.  
From lime and stone in late 14th Century  

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  
Fine Grained Rock, Opaque Rock  

Texture

Texture
Quench  
Clastic or Non-Clastic  

Color
Black, Brown, Green, Grey, Pink, White  
Beige, Black, Blue, Brown, Cream, Gold, Green, Grey, Light Green, Light Grey, Linen, Pink, Red, Rust, Silver, White, Yellow  

Maintenance
Less  
More  

Durability
Durable  
Durable  

Water Resistant
Yes  
No  

Scratch Resistant
Yes  
Yes  

Stain Resistant
No  
Yes  

Wind Resistant
Yes  
No  

Acid Resistant
Yes  
No  

Appearance
Dull and Soft  
Rough and Banded  

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Entryways, Interior Decoration  
Decorative Aggregates, Interior Decoration  

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

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement  
Cement Manufacture, Cobblestones, for Road Aggregate, Production of Glass and Ceramics, Raw material for the manufacture of mortar, Roadstone, Source of calcium  

Medical Industry
-  
In Chemical and Pharmaceutical Industry, Medicines and Cosmetics  

Antiquity Uses
Artifacts, Monuments  
Artifacts, Monuments, Sculpture, Small Figurines  

Other Uses
  
  

Commercial Uses
Creating Artwork, Gemstone  
Animal feed filler, As a Feed Additive for Livestock, Paper Industry, Raw material for manufacture of quicklime, slaked lime, Soil Conditioner, Used in aquariums, Whiting material in toothpaste, paint and paper  

Types

Types
Cataclastic rock  
Chalk, Coquina, Fossiliferous Limestone, Lithographic Limestone, Oolitic Limestone, Travertine, Tufa  

Features
Host Rock for Lead  
Host Rock for Lead, Stalactites and stalagmites are formed from this rock, Zinc and Copper Deposits  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
Acropolis of Athens in Greece, Agia Sophia in Istanbul, Turkey, Al Aqsa Mosque in Jerusalem, Angkor Wat in Cambodia, Big Ben in London, Charminar in Hyderabad, India, Chhatrapati Shivaji Terminus in Maharashtra, India, Chichen Itza in Mexico, Empire State Building in New York, Khajuraho Temples, India, Kremlin in Moscow, Louvre in Paris, France, Neuschwanstein in Bavaria, Potala Palace in Lahasa, Tibet, Wailing Wall in Jerusalem  

Sculpture
-  
-  

Famous Sculptures
-  
Ajanta Caves in Maharashtra, India, Elephanta Caves in Maharashtra, India  

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.  
Limestone is a sedimentary rock which is mainly made up of calcium carbonate.  

Composition
  
  

Mineral Content
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides  
Calcite, Chert, Clay, Dolomite, Quartz, Sand, Silt  

Compound Content
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur  
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, FeO, MgO  

Transformation
  
  

Metamorphism
Yes  
No  

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

Weathering
No  
Yes  

Types of Weathering
-  
Biological Weathering, Chemical Weathering, Mechanical Weathering  

Erosion
No  
Yes  

Types of Erosion
-  
Chemical Erosion, Coastal Erosion  

Properties

Physical Properties
  
  

Hardness
7  
3-4  

Grain Size
Very fine-grained  
Fine Grained  

Fracture
Uneven  
Splintery  

Streak
Light to dark brown  
White  

Porosity
Less Porous  
Less Porous  

Luster
Vitreous  
Dull to Pearly  

Compressive Strength
60.00 N/mm2  
37
115.00 N/mm2  
27

Cleavage
-  
-  

Toughness
-  
1  

Specific Gravity
2.46-2.86  
2.3-2.7  

Transparency
Transparent to Translucent  
Opaque  

Density
2.7-2.9 g/cm3  
2.3-2.7 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.92 kJ/Kg K  
10
0.91 kJ/Kg K  
11

Resistance
Heat Resistant  
Pressure Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
South Korea  
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam  

Africa
Western Africa  
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe  

Europe
Great Britain, Switzerland  
United Kingdom  

Others
-  
-  

Deposits in Western Continents
  
  

North America
-  
USA  

South America
-  
Colombia  

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia  
Adelaide, New Zealand, Queensland, Victoria, Yorke Peninsula  

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Pseudotachylite vs Limestone 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 Limestone Reserves. Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. Limestone is a sedimentary rock composed mostly of calcite and aragonite, which are different crystal forms of calcium carbonate. 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 Limestone information and Pseudotachylite vs Limestone characteristics in the upcoming sections.

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Pseudotachylite vs Limestone 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 Limestone characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Pseudotachylite and Properties of Limestone. Learn more about Pseudotachylite vs Limestone in the next section. The interior uses of Pseudotachylite include Decorative aggregates, Entryways and Interior decoration whereas the interior uses of Limestone include Decorative aggregates and Interior decoration. Due to some exceptional properties of Pseudotachylite and Limestone, 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 Limestone include Cement manufacture, Cobblestones, For road aggregate, Production of glass and ceramics, Raw material for the manufacture of mortar, Roadstone, Source of calcium.

More about Pseudotachylite and Limestone

Here you can know more about Pseudotachylite and Limestone. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Pseudotachylite and Limestone consists of mineral content and compound content. The mineral content of Pseudotachylite includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides and mineral content of Limestone includes Calcite, Chert, Clay, Dolomite, Quartz, Sand, Silt. You can also check out the list of all Metamorphic Rocks. When we have to compare Pseudotachylite vs Limestone, 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, Limestone is available in beige, black, blue, brown, cream, gold, green, grey, light green, light grey, linen, pink, red, rust, silver, white, yellow colors. Appearance of Pseudotachylite is Dull and Soft and that of Limestone is Rough and Banded. Properties of rock is another aspect for Pseudotachylite vs Limestone. The hardness of Pseudotachylite is 7 and that of Limestone is 3-4. The types of Pseudotachylite are Cataclastic rock whereas types of Limestone are Chalk, Coquina, Fossiliferous Limestone, Lithographic Limestone, Oolitic Limestone, Travertine, Tufa. 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 Limestone is white. The specific heat capacity of Pseudotachylite is 0.92 kJ/Kg K and that of Limestone is 0.91 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 Limestone is pressure resistant.

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