Pseudotachylite

Serpentinite

Pseudotachylite and Serpentinite

Pseudotachylite

Serpentinite

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Definition

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

A hydration and metamorphic transformation of ultramafic rock from the Earth's mantle is called as serpentinization, a group of minerals is formed by serpentinization compose rock 'serpentinite'.

History

Origin

USA

Discoverer

Unknown

Etymology

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

From English word serpentinization.

Class

Metamorphic Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Quench

Earthy

Color

Black, Brown, Green, Grey, Pink, White

Black, Brown, Green, Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull and Soft

Rough and Dull

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, Paving Stone, Garden Decoration, Office Buildings

Other Architectural Uses

Curbing

Industry

Construction Industry

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

Medical Industry

Antiquity Uses

Artifacts, Monuments

Artifacts, Jewellery, Monuments, Sculpture

Other Uses

Commercial Uses

Creating Artwork, Gemstone

Commemorative Tablets, Creating Artwork

Types

Cataclastic rock

Jadeitite

Features

Host Rock for Lead

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

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.

Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Serpentinite 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

Carbonate, Magnetite, Pyrrhotite, Serpentine, Sulfides

Compound Content

Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur

Ca, CaO, Carbon Dioxide, KCl, MgO, Sulfur Dioxide, Sulphur

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism

Weathering

✔ ✘

Types of Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

73-5

1 7

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Grain Size

Very fine-grained

Fracture

Uneven

Streak

Light to dark brown

White, Greenish White or Grey

Porosity

Less Porous

Luster

Vitreous

Waxy and Dull

Compressive Strength

60.00 N/mm²310.00 N/mm²

0.15 450

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Cleavage

Toughness

Specific Gravity

2.46-2.862.79-3

0 8.4

👆🏻

Transparency

Transparent to Translucent

Opaque

Density

2.7-2.9 g/cm³2.5-3 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K0.95 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

South Korea

India, Saudi Arabia, Singapore, South Korea

Africa

Western Africa

Ethiopia, Western Africa

Europe

Great Britain, Switzerland

England, Georgia, Switzerland, United Kingdom

Others

Deposits in Western Continents

North America

Canada

South America

Colombia

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

Central Australia, New South Wales, New Zealand, Western Australia

All about Pseudotachylite and Serpentinite Properties

Know all about Pseudotachylite and Serpentinite properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite and Serpentinite belong to Metamorphic Rocks.Texture of Pseudotachylite is Quench whereas that of Serpentinite is Earthy. Pseudotachylite appears Dull and Soft and Serpentinite appears Rough and Dull. The luster of Pseudotachylite is vitreous while that of Serpentinite is waxy and dull. Pseudotachylite and Serpentinite are available in black, brown, green, grey, pink, white colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Serpentinite are commemorative tablets, creating artwork.