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Definition

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

History

Origin
-

Discoverer
Alexandre Brongniart

Etymology
From Amphibole + -ite

Class
Metamorphic Rocks

Sub-Class
Durable Rock, Hard Rock

Family

Group
-

Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Texture
Banded, Foliated, Massive

Color
Black, Brown, Green, Grey

Maintenance
Less

Durability
Durable

Water Resistant
Yes

Scratch Resistant
Yes

Stain Resistant
Yes

Wind Resistant
No

Acid Resistant
Yes

Appearance
Foliated

Uses

Architecture

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

Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, 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

Medical Industry
-

Antiquity Uses
Artifacts, Sculpture, Small Figurines

Other Uses

Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork

Types

Types
Hornblendite

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

Archaeological Significance

Monuments
-

Famous Monuments
-

Sculpture
-

Famous Sculptures
-

Pictographs
-

Petroglyphs
-

Figurines
-

Fossils
Absent

Formation

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.

Composition

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

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

Transformation

Metamorphism
No

Types of Metamorphism
-

Weathering
Yes

Types of Weathering
Chemical Weathering, Mechanical Weathering

Erosion
Yes

Types of Erosion
Chemical Erosion, Glacier Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness
6-7

Grain Size
Medium to Coarse Grained

Fracture
Irregular to Conchoidal

Streak
White to Grey

Porosity
Less Porous

Luster
Vitreous to Dull

Compressive Strength
90.00 N/mm2 32

Cleavage
-

Toughness
2.3

Specific Gravity
2.5

Transparency
Opaque

Density
2.85-3.07 g/cm3

Thermal Properties

Specific Heat Capacity
0.84 kJ/Kg K 15

Resistance
Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia
Russia, Turkey

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

Europe
Germany, Greece, Iceland, Norway, Poland

Others
-

Deposits in Western Continents

North America
Canada, USA

South America
Brazil

Deposits in Oceania Continent

Australia
South Australia, Western Australia

Summary >>
<< Reserves

Igneous Rocks

Learn more about Properties of Amphibolite

What is Amphibolite? In this section, we will learn more about properties of Amphibolite i.e. physical and thermal properties. Physical properties of Amphibolite include Color, Streak, Hardness, Structure, Cleavage, Fracture, Luster, Specific Gravity etc. The strength of Amphibolite is 90.00 N/mm2. Streak of Amphibolite is white to grey while its cleavage is . Luster of Amphibolite is vitreous to dull and its fracture is irregular to conchoidal. Amphibolite is opaque in nature. Know all about Amphibolite, What is Amphibolite, its composition, features, facts and reserves in next sections.

Know about Composition of Amphibolite

What is Amphibolite composed of? Get to know about composition of Amphibolite here. Amphibolite definition gives information about the Formation of Amphibolite and its composition.The composition of Amphibolite can be further divided into mineral and compound content. The mineral content of Amphibolite rock includes Amphibole, Andalusite, Biotite, Calcite, Epidote, Garnet, Hornblade, Kyanite, Magnetite, Olivine, Plagioclase, Pyroxene, Staurolite, Wollastonite and The compound content of Amphibolite rock includes Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide. Almost all rocks undergo transformation process. Know all about Amphibolite rock in next section.

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