Charnockite

Greenschist

Charnockite and Greenschist

Charnockite

Greenschist

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Definition

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

Greenschist is a metamorphic rock that is formed under lowest temperatures and pressures and is usually produced by regional metamorphism

History

Origin

Tamil Nadu, India

Discoverer

T. H. Holland

Unknown

Etymology

From Job Charnock, an administtrator of East India Company

From minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpentine which are green in color

Class

Igneous Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

Family

Group

Plutonic

Other Categories

Coarse Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Granular

Foliated, Platy

Color

Black, Grey, Orange, Pink, White

Dark Greenish - Grey, Green

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Veined or Pebbled

Layered and Shiny

Uses

Architecture

Interior Uses

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

Bathrooms, Countertops, Decorative Aggregates, Entryways, Homes, Interior Decoration

Exterior Uses

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

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

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone

As Dimension Stone, Building houses or walls, Cement Manufacture, Cutting Tool, for Road Aggregate, Roadstone

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts

Other Uses

Commercial Uses

Curling, Gemstone, Laboratory bench tops, Tombstones

Blackboards, Manufacture of tools, Writing Slates

Types

Enderbite

Metamorphic rock

Features

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

Easily splits into thin plates, Smooth to touch

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.

Greenschist is medium grade metamorphic rock, formed by the metamorphosis of mudstone or shale, or some types of igneous rock, when it is subjected to higher temperatures and pressures.

Composition

Mineral Content

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

Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Serpentine, Sillimanite, Staurolite, Talc

Compound Content

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

CaO, Carbon Dioxide, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Biological Weathering, Chemical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion

Properties

Physical Properties

Hardness

6-73.5-4

1 7

👆🏻

Grain Size

Coarse Grained

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

White

Porosity

Very Less Porous

Highly Porous

Luster

Shiny

Compressive Strength

190.00 N/mm²160.00 N/mm²

0.15 450

👆🏻

Cleavage

Slaty

Toughness

1.5

Specific Gravity

-99992.5-2.9

0 8.4

👆🏻

Transparency

Opaque

Density

2.6 g/cm³2.8-2.9 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

Impact Resistant, Pressure Resistant, Water Resistant

Reserves

Deposits in Eastern Continents

Asia

India

Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam

Africa

East Africa, Ethiopia, Madagascar, Morocco, Mozambique

Egypt, Ethiopia, Morocco, Nigeria, South Africa

Europe

Albania, Romania, Scotland, United Kingdom

Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland

Others

Deposits in Western Continents

North America

USA

Canada, Costa Rica, Cuba, Mexico, Panama, USA

South America

Brazil, Colombia, Venezuela

Brazil, Colombia, Guyana

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

New South Wales, New Zealand, Queensland

All about Charnockite and Greenschist Properties

Know all about Charnockite and Greenschist properties here. All properties of rocks are important as they define the type of rock and its application. Charnockite belongs to Igneous Rocks while Greenschist belongs to Metamorphic Rocks.Texture of Charnockite is Granular whereas that of Greenschist is Foliated, Platy. Charnockite appears Veined or Pebbled and Greenschist appears Layered and Shiny. The luster of Charnockite is while that of Greenschist is shiny. Charnockite is available in black, grey, orange, pink, white colors whereas Greenschist is available in dark greenish - grey, green colors. The commercial uses of Charnockite are curling, gemstone, laboratory bench tops, tombstones and that of Greenschist are blackboards, manufacture of tools, writing slates.