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Pseudotachylite vs Travertine


Travertine vs Pseudotachylite


Definition

Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.  
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters  

History
  
  

Origin
USA  
Italy  

Discoverer
Unknown  
Marcus Vitruvius Pollio  

Etymology
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.  
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy  

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  
Banded  

Color
Black, Brown, Green, Grey, Pink, White  
Beige, Black, Blue, Brown, Grey, Red, White, Yellow  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
No  
Yes  

Wind Resistant
Yes  
Yes  

Acid Resistant
Yes  
Yes  

Appearance
Dull and Soft  
Fibrous  

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Entryways, Interior Decoration  
Decorative Aggregates, Entryways, 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, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar  

Medical Industry
-  
-  

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

Other Uses
  
  

Commercial Uses
Creating Artwork, Gemstone  
Cemetery Markers, Creating Artwork, Gemstone, Jewelry, Paper Industry, Pottery  

Types

Types
Cataclastic rock  
Thermal Travertine and Tufa  

Features
Host Rock for Lead  
Stalactites and stalagmites are formed from this rock, Surfaces are often shiny, Very fine grained rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
Colosseum in Rome, Italy, Sacré Coeur in Paris, France, Trevi Fountain in Rome, Italy  

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.  
Travertine is a type of sedimentary rock formed when a river carries or transports pieces of broken rock which then undergo sedimentation. They are then subjected to high temperature and pressure hence forming travertine rock.  

Composition
  
  

Mineral Content
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides  
Calcite, Clay, Feldspar, Micas, Quartz  

Compound Content
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur  
Ca, NaCl, CaO, Oxygen  

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, Glacier 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  
Highly Porous  

Luster
Vitreous  
Dull to Pearly  

Compressive Strength
60.00 N/mm2  
37
80.00 N/mm2  
33

Cleavage
-  
-  

Toughness
-  
1  

Specific Gravity
2.46-2.86  
1.68  

Transparency
Transparent to Translucent  
Opaque  

Density
2.7-2.9 g/cm3  
2.71 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.92 kJ/Kg K  
10
1.09 kJ/Kg K  
8

Resistance
Heat Resistant  
Impact Resistant, Pressure Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
South Korea  
China, Russia  

Africa
Western Africa  
-  

Europe
Great Britain, Switzerland  
Austria, Italy, Portugal, United Kingdom  

Others
-  
-  

Deposits in Western Continents
  
  

North America
-  
Canada, USA  

South America
-  
Argentina, Bolivia, Ecuador  

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia  
-  

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Pseudotachylite vs Travertine 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 Travertine Reserves. Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters. 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 Travertine information and Pseudotachylite vs Travertine characteristics in the upcoming sections.

Compare Metamorphic Rocks

Pseudotachylite vs Travertine 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 Travertine characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Pseudotachylite and Properties of Travertine. Learn more about Pseudotachylite vs Travertine in the next section. The interior uses of Pseudotachylite include Decorative aggregates, Entryways and Interior decoration whereas the interior uses of Travertine include Decorative aggregates, Entryways, Flooring, Homes and Interior decoration. Due to some exceptional properties of Pseudotachylite and Travertine, 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 Travertine include As dimension stone, Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate, Raw material for the manufacture of mortar.

More about Pseudotachylite and Travertine

Here you can know more about Pseudotachylite and Travertine. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Pseudotachylite and Travertine consists of mineral content and compound content. The mineral content of Pseudotachylite includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides and mineral content of Travertine includes Calcite, Clay, Feldspar, Micas, Quartz. You can also check out the list of all Metamorphic Rocks. When we have to compare Pseudotachylite vs Travertine, 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, Travertine is available in beige, black, blue, brown, grey, red, white, yellow colors. Appearance of Pseudotachylite is Dull and Soft and that of Travertine is Fibrous. Properties of rock is another aspect for Pseudotachylite vs Travertine. The hardness of Pseudotachylite is 7 and that of Travertine is 3-4. The types of Pseudotachylite are Cataclastic rock whereas types of Travertine are Thermal Travertine and 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 Travertine is white. The specific heat capacity of Pseudotachylite is 0.92 kJ/Kg K and that of Travertine is 1.09 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 Travertine is impact resistant, pressure resistant, wear resistant.

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