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Laterite
Laterite

Mylonite
Mylonite



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Laterite and Mylonite

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Definition

Definition

Laterite rock is a type of Sedimentary rock which is rich in iron and aluminium, formed in hot and wet tropical areas
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

India
New Zealand

Discoverer

Francis Buchanan-Hamilton
Unknown

Etymology

From Latin later brick, tile + -ite1
From Greek mulōn mill + -ite

Class

Sedimentary Rocks
Metamorphic Rocks

Sub-Class

Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock

Family

Group

-
-

Other Categories

Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock

Texture

Texture

Earthy, Massive, Porphyritic
Foliated

Color

Brown, Buff, Red
Black to Grey

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Rough and Banded
Dull, Banded and Foilated

Uses

Architecture

Interior Uses

Decorative Aggregates, Flooring, Interior Decoration
Decorative Aggregates, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

Cobblestones, for Road Aggregate, Landscaping, Roadstone
for Road Aggregate, Landscaping, Roadstone

Medical Industry

-
-

Antiquity Uses

Artifacts, Monuments, Sculpture
Artifacts, Monuments

Other Uses

Commercial Uses

An Oil and Gas Reservoir, Source of bauxite, Used in aquariums
Creating Artwork, Gemstone, Jewelry

Types

Types

Laterite
Blastomylonites, Ultramylonites and Phyllonites

Features

Is one of the oldest rock, Very fine grained rock
Surfaces are often shiny

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Present
Absent

Formation

Formation

Laterite is a type of sedimentary rock which is generally a reddish weathering product of basalt.
Mylonites are ductilely deformed rocks formed by the accumulation of large shear strain, in ductile fault zones.

Composition

Mineral Content

Aluminum Oxides, Biotite, Hematite, Hornblade, Iron Oxides, Manganese Oxides, Micas, Muscovite or Illite, Plagioclase, Pyroxene
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

-
-

Weathering

Types of Weathering

Biological Weathering, Chemical 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

23-4
1 7
👆🏻

Grain Size

Fine Grained
Fine Grained

Fracture

Conchoidal
Conchoidal

Streak

White
White

Porosity

Highly Porous
Highly Porous

Luster

Dull
Shiny

Compressive Strength

5.00 N/mm21.28 N/mm2
0.15 450
👆🏻

Cleavage

-
Conchoidal

Toughness

-
-

Specific Gravity

-99992.97-3.05
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

-9999 g/cm32.6-4.8 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K1.50 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Pressure Resistant
Heat Resistant, Impact Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

India
China, India, Indonesia, Saudi Arabia, South Korea

Africa

East Africa, Western Africa
Eritrea, Ethiopia, Ghana, South Africa, Western Africa

Europe

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

Others

-
-

Deposits in Western Continents

North America

Canada, USA
USA

South America

-
-

Deposits in Oceania Continent

Australia

Central Australia, Western Australia
Central Australia, Western Australia

All about Laterite and Mylonite Properties

Know all about Laterite and Mylonite properties here. All properties of rocks are important as they define the type of rock and its application. Laterite belongs to Sedimentary Rocks while Mylonite belongs to Metamorphic Rocks.Texture of Laterite is Earthy, Massive, Porphyritic whereas that of Mylonite is Foliated. Laterite appears Rough and Banded and Mylonite appears Dull, Banded and Foilated. The luster of Laterite is dull while that of Mylonite is shiny. Laterite is available in brown, buff, red colors whereas Mylonite is available in black to grey colors. The commercial uses of Laterite are an oil and gas reservoir, source of bauxite, used in aquariums and that of Mylonite are creating artwork, gemstone, jewelry.