Cataclasite and Siltstone

Cataclasite

Siltstone

Definition

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

Siltstone can be defined as a fine-grained sedimentary rock which mainly consists of consolidated silt

History

Origin

Swiss Alps, Europe

Unknown

Discoverer

Michael Tellinger

Unknown

Etymology

From the Italian word cataclasi

From English word silt and stone and from Proto-Indo-European root sal and stainaz

Class

Metamorphic Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

Family

Group

Not Applicable

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Clastic

Color

Brown, Green, White, Yellow

Brown, Red, Reddish Brown

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Dull and Banded

Rough

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes

Decorative Aggregates, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Paving Stone

As Building Stone, As Facing Stone, Garden Decoration

Other Architectural Uses

Curbing

Industry

Construction Industry

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

Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts

Artifacts, Sculpture, Small Figurines

Other Uses

Commercial Uses

Commemorative Tablets, Creating Artwork

Raw material for the manufacture of mortar, Soil Conditioner

Types

Protocataclasite, Mesocataclasite, Ultracataclasite and Foliated cataclasite

Not Available

Features

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

Available in Lots of Colors and Patterns, Easily splits into thin plates, Generally rough to touch, High silica content, Very fine grained rock

Archaeological Significance

Monuments

Not Yet Used

Famous Monuments

Not Applicable

Sculpture

Not Yet Used

Used

Famous Sculptures

Not Applicable

Data Not Available

Pictographs

Used

Not Used

Petroglyphs

Used

Not Used

Figurines

Not Yet Used

Used

Fossils

Absent

Present

Formation

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.

Siltstone is a type of sedimentary rock which is formed from fine rock particles. As the particles of eroded rock travel along with water, the edges of the rock are worn-out by water into a rounded shape.

Composition

Mineral Content

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

Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz, Sand, Silica, Silt

Compound Content

Silicon Dioxide

Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide

Transformation

Metamorphism

Types of Metamorphism

Not Applicable

Weathering

Yes

Types of Weathering

Mechanical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

Coastal Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

3-4

6-7

Grain Size

Fine Grained

Fracture

Conchoidal

Streak

Black

White

Porosity

Less Porous

Highly Porous

Luster

Vitreous

Dull

Cleavage

Not Available

Toughness

Not Available

2.6

Specific Gravity

2.1

2.54-2.73

Transparency

Translucent to Opaque

Opaque

Density

2.9-3.1 g/cm³

2.6-2.7 g/cm³

Thermal Properties

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Water Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Russia, Saudi Arabia, South Korea

China, India, Kazakhstan, Mongolia, Russia, Uzbekistan

Africa

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

Namibia, Nigeria, South Africa

Europe

England, Finland, France, Spain, United Kingdom

Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom

Others

Not Yet Found

Greenland

Deposits in Western Continents

North America

Canada, USA

South America

Argentina, Colombia

Brazil

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

New South Wales, New Zealand

Summary >>

<< Reserves

All about Cataclasite and Siltstone Properties

Know all about Cataclasite and Siltstone properties here. All properties of rocks are important as they define the type of rock and its application. Cataclasite belongs to Metamorphic Rocks while Siltstone belongs to Sedimentary Rocks.Texture of Cataclasite is Clastic whereas that of Siltstone is Clastic. Cataclasite appears Dull and Banded and Siltstone appears Rough. The luster of Cataclasite is vitreous while that of Siltstone is dull. Cataclasite is available in brown, green, white, yellow colors whereas Siltstone is available in brown, red, reddish brown colors. The commercial uses of Cataclasite are commemorative tablets, creating artwork and that of Siltstone are raw material for the manufacture of mortar, soil conditioner.