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Pseudotachylite Rock

Types of Hard Rocks

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Pseudotachylite Definition

Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.

History of Pseudotachylite

Origin
USA
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Discoverer
Unknown

Etymology
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.

Class
Metamorphic Rocks
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Sub-Class
Durable Rock, Hard Rock
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Pseudotachylite Family

Group
Not Applicable

Other Categories
Fine Grained Rock, Opaque Rock

Pseudotachylite Texture

Texture
Quench
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Pseudotachylite Color
Black, Brown, Colourless, Green, Grey, Pink, White

Maintenance
Less
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Durability
Durable

Water Resistant
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Scratch Resistant
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Stain Resistant
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Wind Resistant
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Acid Resistant
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Appearance
Dull and Soft
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Pseudotachylite Uses

Architecture

Interior Uses
Decorative Aggregates, Entryways, Interior Decoration
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Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration
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Other Architectural Uses
Curbing

Industry

Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement

Medical Industry
Not Yet Used

Antiquity Uses
Artifacts, Monuments
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Other Uses

Commercial Uses
Creating Artwork, Gemstone
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Pseudotachylite Types

Types
Not Available

Features
Host Rock for Lead
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Archaeological Significance of Pseudotachylite

Monuments
Used

Famous Monuments
Data Not Available

Sculpture
Not Yet Used

Famous Sculptures
Not Applicable

Pictographs
Not Used

Petroglyphs
Not Used

Figurines
Not Yet Used

Fossils
Absent

Formation of Pseudotachylite

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.

Composition

Mineral Content
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides
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Compound Content
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur
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Transformation

Metamorphism

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering

Types of Weathering
Not Applicable

Erosion

Types of Erosion
Not Applicable

Properties of Pseudotachylite

Physical Properties of Pseudotachylite

Hardness
7

Grain Size
Very fine-grained
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Fracture
Uneven
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Streak
Light to dark brown
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Porosity
Less Porous
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Luster
Vitreous
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Compressive Strength
60.00 N/mm2
26
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Cleavage
Irregular
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Toughness
Not Available

Specific Gravity
2.46-2.86

Transparency
Transparent to Translucent
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Density
2.7-2.9 g/cm3

Thermal Properties of Pseudotachylite

Specific Heat Capacity
0.92 kJ/Kg K
10
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Resistance
Heat Resistant
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Pseudotachylite Reserves

Pseudotachylite Deposits in Eastern Continents

Asia
South Korea

Africa
Western Africa

Europe
Great Britain, Switzerland

Others
Not Yet Found

Pseudotachylite Deposits in Western Continents

North America
Not Yet Found

South America
Not Yet Found

Pseudotachylite Deposits in Oceania Continent

Australia
Central Australia, Western Australia

Information about Pseudotachylite

Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Pseudotachylite Uses. We have provided you with all information about Pseudotachylite rock here. Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Pseudotachylite is light to dark brown. Get to know more about Pseudotachylite rock and characteristics of Pseudotachylite rock in the next sections.

Characteristics of Pseudotachylite

Many rocks have distinct characteristics. Some of the Properties of Pseudotachylite are hardness, structure, streak, fracture etc. Pseudotachylite is significant as it is composed of minerals and has variety of uses in our day to day life. The characteristics of Pseudotachylite plays an important role in its identification. The hardness of Pseudotachylite is 7 on Moh’s hardness scale. Rocks according to their hardness are divided into:Hard Rocks, Soft Rocks and Rocks with Medium Hardness. Fracture of Pseudotachylite rock is uneven. Its specific heat capacity is 0.92 kJ/Kg K. Pseudotachylite is heat resistant. Some of its uses are:

  • Interior Uses: Decorative aggregates, Entryways and Interior decoration.
  • Construction Industry: As dimension stone, Cement manufacture, For road aggregate, Making natural cement.

Know more about Pseudotachylite rock in the next section.

More About Pseudotachylite

Pseudotachylite is a type of Metamorphic Rocks. The color of rock is one of its important property. Pseudotachylite rock is available in black, brown, colourless, green, grey, pink, white colors. It is Dull and Soft in appearance. The Pseudotachylite mineral content includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides. Its compound content includes Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur. Let’s move on to the types of Pseudotachylite. Pseudotachylite rock does not have any types. Fossils are the remains of prehistoric plants or animals which are embedded in rock and preserved in petrified form. Fossils are found only in sedimentary rocks. As Pseudotachylite belongs to Metamorphic Rocks, fossils are not found in it.