Charnockite

Amphibolite

Charnockite and Amphibolite

Charnockite

Amphibolite

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Definition

Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar

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

History

Origin

Tamil Nadu, India

Discoverer

T. H. Holland

Alexandre Brongniart

Etymology

From Job Charnock, an administtrator of East India Company

From Amphibole + -ite

Class

Igneous Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Plutonic

Other Categories

Coarse Grained Rock, Opaque Rock

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Granular

Banded, Foliated, Massive

Color

Black, Grey, Orange, Pink, White

Black, Brown, Green, Grey

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Veined or Pebbled

Foliated

Uses

Architecture

Interior Uses

Bathrooms, Countertops, Decorative Aggregates, Entryways, Floor Tiles, Homes, Hotels, Kitchens, Stair Treads

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

Exterior Uses

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

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

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone

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, Monuments, Sculpture, Small Figurines

Artifacts, Sculpture, Small Figurines

Other Uses

Commercial Uses

Curling, Gemstone, Laboratory bench tops, Tombstones

Cemetery Markers, Commemorative Tablets, Creating Artwork

Types

Enderbite

Hornblendite

Features

Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock

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

Charnockite is an intrusive igneous rock which is very hard and is formed due to weathering of existing rocks.

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, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Olivine, Plagioclase, Pyroxene, Quartz

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

✔ ✘

Types of Metamorphism

Burial Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Glacier Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

6-76-7

1 7

👆🏻

Grain Size

Coarse Grained

Medium to Coarse Grained

Fracture

Irregular to Conchoidal

Streak

White

White to Grey

Porosity

Very Less Porous

Less Porous

Luster

Vitreous to Dull

Compressive Strength

190.00 N/mm²90.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

2.3

Specific Gravity

-99992.5

0 8.4

👆🏻

Transparency

Opaque

Density

2.6 g/cm³2.85-3.07 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, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

India

Russia, Turkey

Africa

East Africa, Ethiopia, Madagascar, Morocco, Mozambique

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

Europe

Albania, Romania, Scotland, United Kingdom

Germany, Greece, Iceland, Norway, Poland

Others

Deposits in Western Continents

North America

USA

Canada, USA

South America

Brazil, Colombia, Venezuela

Brazil

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

South Australia, Western Australia

All about Charnockite and Amphibolite Properties

Know all about Charnockite and Amphibolite properties here. All properties of rocks are important as they define the type of rock and its application. Charnockite belongs to Igneous Rocks while Amphibolite belongs to Metamorphic Rocks.Texture of Charnockite is Granular whereas that of Amphibolite is Banded, Foliated, Massive. Charnockite appears Veined or Pebbled and Amphibolite appears Foliated. The luster of Charnockite is while that of Amphibolite is vitreous to dull. Charnockite is available in black, grey, orange, pink, white colors whereas Amphibolite is available in black, brown, green, grey colors. The commercial uses of Charnockite are curling, gemstone, laboratory bench tops, tombstones and that of Amphibolite are cemetery markers, commemorative tablets, creating artwork.