Scoria

Cataclasite

Scoria and Cataclasite

Scoria

Cataclasite

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Definition

Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities

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

Swiss Alps, Europe

Discoverer

Unknown

Michael Tellinger

Etymology

From late Middle English (denoting slag from molten metal), from Greek skōria refuse, from skōr dung

From the Italian word cataclasi

Class

Igneous Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Vesicular

Clastic

Color

Black, Brown, Dark Grey to Black, Red

Brown, Green, White, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy and Vesicular

Dull and Banded

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Homes

Exterior Uses

Garden Decoration, Paving Stone

As Building Stone, As Facing Stone, Paving Stone

Other Architectural Uses

Curbing

Industry

Construction Industry

Cement Manufacture, Construction Aggregate, for Road Aggregate, In landscaping and drainage works

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

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts

Other Uses

Commercial Uses

As a traction material on snow-covered roads, Creating Artwork, High-temperature insulation, In gas barbecue grills

Commemorative Tablets, Creating Artwork

Types

Basaltic Scoria and Andesitic Scoria

Protocataclasite, Mesocataclasite, Ultracataclasite and Foliated cataclasite

Features

Available in Lots of Colors and Patterns, Generally rough to touch, Surfaces are often shiny

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

Scoria forms when magma containing huge amount of dissolved gas flows from a volcano during an eruption.

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

Apatite, Biotite, Calcite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz, Silica

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

Compound Content

Ca, NaCl

Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Coastal Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5-63-4

1 7

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Grain Size

Fine Grained

Fracture

Conchoidal

Streak

White

Black

Porosity

Highly Porous

Less Porous

Luster

Subvitreous to Dull

Vitreous

Compressive Strength

70.00 N/mm²50.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

2.1

Specific Gravity

-99992.1

0 8.4

👆🏻

Transparency

Opaque

Translucent to Opaque

Density

-9999 g/cm³2.9-3.1 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

Afghanistan, Indonesia, Japan, Russia

China, India, Russia, Saudi Arabia, South Korea

Africa

Ethiopia, Kenya, Tanzania

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

Europe

Greece, Hungary, Iceland, Italy, Turkey

England, Finland, France, Spain, United Kingdom

Others

Deposits in Western Continents

North America

Bahamas, Barbados, Canada, Costa Rica, Cuba, Jamaica, Mexico, USA

Canada, USA

South America

Argentina, Chile, Ecuador, Peru

Argentina, Colombia

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

Central Australia, Western Australia

All about Scoria and Cataclasite Properties

Know all about Scoria and Cataclasite properties here. All properties of rocks are important as they define the type of rock and its application. Scoria belongs to Igneous Rocks while Cataclasite belongs to Metamorphic Rocks.Texture of Scoria is Vesicular whereas that of Cataclasite is Clastic. Scoria appears Glassy and Vesicular and Cataclasite appears Dull and Banded. The luster of Scoria is subvitreous to dull while that of Cataclasite is vitreous. Scoria is available in black, brown, dark grey to black, red colors whereas Cataclasite is available in brown, green, white, yellow colors. The commercial uses of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills and that of Cataclasite are commemorative tablets, creating artwork.