Amphibolite

Cataclasite

Amphibolite and Cataclasite

Amphibolite

Cataclasite

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Definition

Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase

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

Alexandre Brongniart

Michael Tellinger

Etymology

From Amphibole + -ite

From the Italian word cataclasi

Class

Metamorphic Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Banded, Foliated, Massive

Clastic

Color

Black, Brown, Green, Grey

Brown, Green, White, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Foliated

Dull and Banded

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Kitchens

Decorative Aggregates, Homes

Exterior Uses

As Building Stone, As Facing Stone, Paving Stone, Office Buildings

As Building Stone, As Facing Stone, Paving Stone

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Building houses or walls, Cobblestones, Construction Aggregate, for Road Aggregate, Landscaping, Production of Glass and Ceramics, Roadstone

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

Medical Industry

Antiquity Uses

Artifacts, Sculpture, Small Figurines

Artifacts

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork

Commemorative Tablets, Creating Artwork

Types

Hornblendite

Protocataclasite, Mesocataclasite, Ultracataclasite and Foliated cataclasite

Features

Clasts are smooth to touch, Matrix variable, 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

Amphibolite is a coarse-grained metamorphic rock which forms by metamorphism of mafic igneous rocks like basalt and gabbro or from the metamorphism of clay-rich sedimentary rocks like marl or graywacke.

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

Amphibole, Andalusite, Biotite, Calcite, Epidote, Garnet, Hornblade, Kyanite, Magnetite, Olivine, Plagioclase, Pyroxene, Staurolite, Wollastonite

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

Compound Content

Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Chemical Weathering, Mechanical Weathering

Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Glacier Erosion, Sea Erosion, Wind Erosion

Coastal Erosion, Wind Erosion

Properties

Physical Properties

Hardness

6-73-4

1 7

👆🏻

Grain Size

Medium to Coarse Grained

Fine Grained

Fracture

Irregular to Conchoidal

Streak

White to Grey

Black

Porosity

Less Porous

Luster

Vitreous to Dull

Vitreous

Compressive Strength

90.00 N/mm²50.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

2.3

Specific Gravity

2.52.1

0 8.4

👆🏻

Transparency

Opaque

Translucent to Opaque

Density

2.85-3.07 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, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

Russia, Turkey

China, India, Russia, Saudi Arabia, South Korea

Africa

Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda

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

Europe

Germany, Greece, Iceland, Norway, Poland

England, Finland, France, Spain, United Kingdom

Others

Deposits in Western Continents

North America

Canada, USA

South America

Brazil

Argentina, Colombia

Deposits in Oceania Continent

Australia

South Australia, Western Australia

Central Australia, Western Australia

All about Amphibolite and Cataclasite Properties

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