What is Pseudotachylite?

Pseudotachylite

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1 Definition

1.1 Definition

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

1.2 History

1.2.1 Origin

USA

1.2.2 Discoverer

Unknown

1.3 Etymology

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

1.4 Class

Metamorphic Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

1.5 Family

1.5.1 Group

Not Applicable

1.6 Other Categories

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Quench

2.2 Color

Black, Brown, Colourless, Green, Grey, Pink, White

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

81% Metamorphic Rocks Rocks have it !

2.4.2 Scratch Resistant

✔ ✘

65% Metamorphic Rocks Rocks have it !

2.4.3 Stain Resistant

✔ ✘

42% Metamorphic Rocks Rocks have it !

2.4.4 Wind Resistant

✔ ✘

19% Metamorphic Rocks Rocks have it !

2.4.5 Acid Resistant

✔ ✘

15% Metamorphic Rocks Rocks have it !

2.5 Appearance

Dull and Soft

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Entryways, Interior Decoration

3.1.2 Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

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

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Monuments

3.4 Other Uses

3.4.1 Commercial Uses

Creating Artwork, Gemstone

4 Types

4.1 Types

Not Available

4.2 Features

Host Rock for Lead

4.3 Archaeological Significance

4.3.1 Monuments

Used

4.3.2 Famous Monuments

Data Not Available

4.3.3 Sculpture

Not Yet Used

4.3.4 Famous Sculptures

Not Applicable

4.3.5 Pictographs

Not Used

4.3.6 Petroglyphs

Not Used

4.3.7 Figurines

Not Yet Used

4.4 Fossils

Absent

5 Formation

5.1 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.

5.2 Composition

5.2.1 Mineral Content

Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides

5.2.2 Compound Content

Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

50% Metamorphic Rocks Rocks have it !

5.3.2 Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

5.3.3 Weathering

✔ ✘

65% Metamorphic Rocks Rocks have it !

5.3.4 Types of Weathering

Not Applicable

5.3.5 Erosion

✔ ✘

77% Metamorphic Rocks Rocks have it !

5.3.6 Types of Erosion

Not Applicable

6 Properties

6.1 Physical Properties

6.1.1 Hardness

6.1.2 Grain Size

Very fine-grained

6.1.3 Fracture

Uneven

6.1.4 Streak

Light to dark brown

6.1.5 Porosity

Less Porous

6.1.6 Luster

Vitreous

6.1.7 Compressive Strength

What Is Flint

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▶

▼

60.00 N/mm²

Rank: 25 (Overall)▶

▲

What Is Obsidian

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▶

175 (What Is Grani..)

◀ ▶ ADD ⊕

6.1.8 Cleavage

Irregular

6.1.9 Toughness

Not Available

6.1.10 Specific Gravity

2.46-2.86

6.1.11 Transparency

Transparent to Translucent

6.1.12 Density

2.7-2.9 g/cm³

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

What Is Banded ..

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▶

▼

0.92 kJ/Kg K

Rank: 10 (Overall)▶

▲

What Is Granulite

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1.09 (What Is Trave..)

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6.2.2 Resistance

Heat Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

South Korea

7.1.2 Africa

Western Africa

7.1.3 Europe

Great Britain, Switzerland

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Not Yet Found

7.2.2 South America

Not Yet Found

7.3 Deposits in Oceania Continent

7.3.1 Australia

Central Australia, Western Australia

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Learn more about Properties of Pseudotachylite

What is Pseudotachylite? In this section, we will learn more about properties of Pseudotachylite i.e. physical and thermal properties. Physical properties of Pseudotachylite include Color, Streak, Hardness, Structure, Cleavage, Fracture, Luster, Specific Gravity etc. The strength of Pseudotachylite is 60.00 N/mm². Streak of Pseudotachylite is light to dark brown while its cleavage is irregular. Luster of Pseudotachylite is vitreous and its fracture is uneven. Pseudotachylite is transparent to translucent in nature. Know all about Pseudotachylite, What is Pseudotachylite, its composition, features, facts and reserves in next sections.

Know about Composition of Pseudotachylite

What is Pseudotachylite composed of? Get to know about composition of Pseudotachylite here. Pseudotachylite definition gives information about the Formation of Pseudotachylite and its composition.The composition of Pseudotachylite can be further divided into mineral and compound content. The mineral content of Pseudotachylite rock includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides and The compound content of Pseudotachylite rock includes Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur. Almost all rocks undergo transformation process. Know all about Pseudotachylite rock in next section.