Tachylite

Cataclasite

Tachylite and Cataclasite

Tachylite

Cataclasite

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Definition

Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt

Cataclasite is a type of cataclastic rock that is formed by fracturing and comminution during faulting. It is normally cohesive and non-foliated, consisting of angular clasts in a finer-grained matrix

History

Origin

Iceland

Swiss Alps, Europe

Discoverer

Unknown

Michael Tellinger

Etymology

From German Tachylite, from tachy- + Greek lutos soluble, melting

From the Italian word cataclasi

Class

Igneous Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Other Categories

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Vitreous

Clastic

Color

Black, Dark Brown

Brown, Green, White, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy

Dull and Banded

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Homes

Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration, Paving Stone

As Building Stone, As Facing Stone, Paving Stone

Other Architectural Uses

Curbing

Industry

Construction Industry

Cutting Tool, Knives, Landscaping, Scrapers

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate

Medical Industry

Antiquity Uses

Artifacts

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Commemorative Tablets, Creating Artwork

Types

Volcanic glass

Protocataclasite, Mesocataclasite, Ultracataclasite and Foliated cataclasite

Features

Available in Lots of Colors and Patterns, Clasts are smooth to touch

Easily splits into thin plates, Is one of the oldest rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

Tachylite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

Cataclasiste rocks mainly form by pressure deep under the Earth's surface, from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

Composition

Mineral Content

Feldspar, Olivine

Albite, Apatite, Augite, Biotite, Calcite, Enstatite, Epidote, Feldspar, Micas, Muscovite or Illite, Pyroxene, Quartz

Compound Content

Fe, Mg

Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

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

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Sea Erosion, Water Erosion, Wind Erosion

Coastal Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5.53-4

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Fine Grained

Fracture

Conchoidal

Streak

Vermilion

Black

Porosity

Less Porous

Luster

Resinous

Vitreous

Compressive Strength

206.00 N/mm²50.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

2.42.1

0 8.4

👆🏻

Transparency

Opaque

Translucent to Opaque

Density

3.058 g/cm³2.9-3.1 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.56 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

Cambodia, Russia, South Korea

China, India, Russia, Saudi Arabia, South Korea

Africa

East Africa

Egypt, Ethiopia, Kenya, Madagascar, Morocco, South Africa

Europe

England, Germany, Hungary, Iceland, Scotland, Sweden

England, Finland, France, Spain, United Kingdom

Others

Hawaii Islands

Deposits in Western Continents

North America

USA

Canada, USA

South America

Argentina, Colombia

Deposits in Oceania Continent

Australia

Victoria

Central Australia, Western Australia

All about Tachylite and Cataclasite Properties

Know all about Tachylite and Cataclasite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Cataclasite belongs to Metamorphic Rocks.Texture of Tachylite is Vitreous whereas that of Cataclasite is Clastic. Tachylite appears Glassy and Cataclasite appears Dull and Banded. The luster of Tachylite is resinous while that of Cataclasite is vitreous. Tachylite is available in black, dark brown colors whereas Cataclasite is available in brown, green, white, yellow colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Cataclasite are commemorative tablets, creating artwork.