Charnockite

Mylonite

Charnockite and Mylonite

Charnockite

Mylonite

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Definition

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

Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism

History

Origin

Tamil Nadu, India

New Zealand

Discoverer

T. H. Holland

Unknown

Etymology

From Job Charnock, an administtrator of East India Company

From Greek mulōn mill + -ite

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

Fine Grained Rock, Opaque Rock

Texture

Granular

Foliated

Color

Black, Grey, Orange, Pink, White

Black to Grey

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Veined or Pebbled

Dull, Banded and Foilated

Uses

Architecture

Interior Uses

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

Decorative Aggregates, 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

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone

for Road Aggregate, Landscaping, Roadstone

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Monuments

Other Uses

Commercial Uses

Curling, Gemstone, Laboratory bench tops, Tombstones

Creating Artwork, Gemstone, Jewelry

Types

Enderbite

Blastomylonites, Ultramylonites and Phyllonites

Features

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

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.

Mylonites are ductilely deformed rocks formed by the accumulation of large shear strain, in ductile fault zones.

Composition

Mineral Content

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

Porphyroblasts

Compound Content

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

Aluminium Oxide, Calcium Sulfate, Chromium(III) Oxide, Iron(III) Oxide, Magnesium Carbonate, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

6-73-4

1 7

👆🏻

Grain Size

Coarse Grained

Fine Grained

Fracture

Conchoidal

Streak

White

Porosity

Very Less Porous

Highly Porous

Luster

Shiny

Compressive Strength

190.00 N/mm²1.28 N/mm²

0.15 450

👆🏻

Cleavage

Conchoidal

Toughness

Specific Gravity

-99992.97-3.05

0 8.4

👆🏻

Transparency

Opaque

Density

2.6 g/cm³2.6-4.8 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K1.50 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

India

China, India, Indonesia, Saudi Arabia, South Korea

Africa

East Africa, Ethiopia, Madagascar, Morocco, Mozambique

Eritrea, Ethiopia, Ghana, South Africa, Western Africa

Europe

Albania, Romania, Scotland, United Kingdom

England, Finland, France, Germany, Great Britain, Greece, United Kingdom

Others

Deposits in Western Continents

North America

USA

South America

Brazil, Colombia, Venezuela

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

All about Charnockite and Mylonite Properties

Know all about Charnockite and Mylonite properties here. All properties of rocks are important as they define the type of rock and its application. Charnockite belongs to Igneous Rocks while Mylonite belongs to Metamorphic Rocks.Texture of Charnockite is Granular whereas that of Mylonite is Foliated. Charnockite appears Veined or Pebbled and Mylonite appears Dull, Banded and Foilated. The luster of Charnockite is while that of Mylonite is shiny. Charnockite is available in black, grey, orange, pink, white colors whereas Mylonite is available in black to grey colors. The commercial uses of Charnockite are curling, gemstone, laboratory bench tops, tombstones and that of Mylonite are creating artwork, gemstone, jewelry.