Amphibolite and Teschenite

Amphibolite

Teschenite

Definition

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

Teschenite is coarse- to fine-grained, dark-coloured intrusive igneous rock that usually occurs in sills, dikes and irregular masses and is always altered to some extent

History

Origin

Unknown

Scotland

Discoverer

Alexandre Brongniart

Unknown

Etymology

From Amphibole + -ite

From its occurrence near Teschen. now known as Cieszyn, Pol., Scotland

Class

Metamorphic Rocks

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Not Applicable

Plutonic

Other Categories

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Coarse Grained Rock, Opaque Rock

Texture

Banded, Foliated, Massive

Phaneritic

Color

Black, Brown, Green, Grey

Dark Grey to Black

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Foliated

Veined and Shiny

Uses

Architecture

Interior Uses

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

Countertops, Decorative Aggregates, Entryways, Homes, Interior Decoration

Exterior Uses

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

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

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

Not Yet Used

Antiquity Uses

Artifacts, Sculpture, Small Figurines

Artifacts, Sculpture

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork

Cemetery Markers, Commemorative Tablets, Creating Artwork, Laboratory bench tops, Jewelry, Sea Defence, Tombstones

Types

Hornblendite

Not Available

Features

Clasts are smooth to touch, Matrix variable, Surfaces are often shiny

Smooth to touch

Archaeological Significance

Monuments

Used

Famous Monuments

Data Not Available

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Not Used

Petroglyphs

Not Used

Figurines

Used

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.

Teschenite 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.

Composition

Mineral Content

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

Augite, Olivine, Plagioclase, Pyroxene

Compound Content

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

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

Transformation

Metamorphism

Yes

Types of Metamorphism

Not Applicable

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

Weathering

Yes

Types of Weathering

Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

Chemical Erosion, Glacier Erosion, Sea Erosion, Wind Erosion

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

Properties

Physical Properties

Hardness

6-7

Grain Size

Medium to Coarse Grained

Coarse Grained

Fracture

Irregular to Conchoidal

Conchoidal

Streak

White to Grey

Black

Porosity

Less Porous

Highly Porous

Luster

Vitreous to Dull

Not Available

Compressive Strength

Not Available

225.00 N/mm²

Cleavage

Irregular

Not Available

Toughness

2.3

1.6

Specific Gravity

2.5

2.86-2.87

Transparency

Opaque

Density

2.85-3.07 g/cm³

2.7-3.3 g/cm³

Thermal Properties

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Russia, Turkey

India, Russia

Africa

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

South Africa

Europe

Germany, Greece, Iceland, Norway, Poland

Germany, Greece, Italy, Scotland, Turkey

Others

Not Yet Found

Greenland

Deposits in Western Continents

North America

Canada, USA

South America

Brazil

Brazil, Colombia, Venezuela

Deposits in Oceania Continent

Australia

South Australia, Western Australia

New Zealand, Queensland

Summary >>

<< Reserves

All about Amphibolite and Teschenite Properties

Know all about Amphibolite and Teschenite properties here. All properties of rocks are important as they define the type of rock and its application. Amphibolite belongs to Metamorphic Rocks while Teschenite belongs to Igneous Rocks.Texture of Amphibolite is Banded, Foliated, Massive whereas that of Teschenite is Phaneritic. Amphibolite appears Foliated and Teschenite appears Veined and Shiny. The luster of Amphibolite is vitreous to dull while that of Teschenite is not available. Amphibolite is available in black, brown, green, grey colors whereas Teschenite is available in dark grey to black colors. The commercial uses of Amphibolite are cemetery markers, commemorative tablets, creating artwork and that of Teschenite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.