Charnockite

Dolomite

Charnockite and Dolomite

Charnockite

Dolomite

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Definition

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

Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight

History

Origin

Tamil Nadu, India

Southern Alps, France

Discoverer

T. H. Holland

Dolomieu

Etymology

From Job Charnock, an administtrator of East India Company

From French, from the name of Dolomieu (1750–1801), the French geologist who discovered the rock

Class

Igneous Rocks

Sedimentary 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

Earthy

Color

Black, Grey, Orange, Pink, White

Black, Brown, Green, Grey, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Veined or Pebbled

Glassy or Pearly

Uses

Architecture

Interior Uses

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

Decorative Aggregates, Homes, Interior Decoration

Exterior Uses

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

Garden Decoration, Office Buildings

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone

As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics, Serves as an Oil and Gas Reservoir rock

Medical Industry

Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Jewellery, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Curling, Gemstone, Laboratory bench tops, Tombstones

An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)

Types

Enderbite

Boninite and Jasperoid

Features

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

Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

Formation

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

Dolomite rocks are originally deposited as calcite or aragonite rich limestone, but during diagenesis process, the calcite or aragonite is transformed into dolomite.

Composition

Mineral Content

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

Clay Minerals, Pyrite, Quartz, Sulfides

Compound Content

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

NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Contact Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Water Erosion, Wind 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

Less Porous

Luster

Vitreous and Pearly

Compressive Strength

190.00 N/mm²140.00 N/mm²

0.15 450

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Cleavage

Perfect

Toughness

Specific Gravity

-99992.8-3

0 8.4

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Transparency

Opaque

Transparent to Translucent

Density

2.6 g/cm³2.8-2.9 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.92 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

China, India

Africa

East Africa, Ethiopia, Madagascar, Morocco, Mozambique

Morocco, Namibia

Europe

Albania, Romania, Scotland, United Kingdom

Austria, Italy, Romania, Spain, Switzerland

Others

Deposits in Western Continents

North America

USA

Mexico, USA

South America

Brazil, Colombia, Venezuela

Brazil, Colombia

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

New South Wales, Queensland, Yorke Peninsula

All about Charnockite and Dolomite Properties

Know all about Charnockite and Dolomite properties here. All properties of rocks are important as they define the type of rock and its application. Charnockite belongs to Igneous Rocks while Dolomite belongs to Sedimentary Rocks.Texture of Charnockite is Granular whereas that of Dolomite is Earthy. Charnockite appears Veined or Pebbled and Dolomite appears Glassy or Pearly. The luster of Charnockite is while that of Dolomite is vitreous and pearly. Charnockite is available in black, grey, orange, pink, white colors whereas Dolomite is available in black, brown, green, grey, pink, white colors. The commercial uses of Charnockite are curling, gemstone, laboratory bench tops, tombstones and that of Dolomite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).