Metapelite

Laterite

Metapelite and Laterite

Metapelite

Laterite

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Definition

Metapelite is an old and currently not widely used field geological term for a clay rich fine-grained clastic sediment or sedimentary rock, i.e. mud or a mudstone

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

History

Origin

India

Discoverer

Unknown

Francis Buchanan-Hamilton

Etymology

From Pelos or clay in Greek

From Latin later brick, tile + -ite1

Class

Metamorphic Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Soft Rock

Family

Group

Other Categories

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

Fine Grained Rock, Opaque Rock

Texture

Foliated

Earthy, Massive, Porphyritic

Color

Dark Greenish - Grey, Green, Light Green, Light Greenish Grey

Brown, Buff, Red

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Banded

Rough and Banded

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Flooring, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone

As Building Stone, As Facing Stone, Garden Decoration

Other Architectural Uses

Curbing

Industry

Construction Industry

Cement Manufacture, Construction Aggregate, for Road Aggregate

Cobblestones, for Road Aggregate, Landscaping, Roadstone

Medical Industry

Antiquity Uses

Artifacts

Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

Commemorative Tablets, Creating Artwork

An Oil and Gas Reservoir, Source of bauxite, Used in aquariums

Types

Metamorphic rock

Laterite

Features

Easily splits into thin plates, It is One of the Oldest, Strongest and Hardest Rock

Is one of the oldest rock, Very fine grained rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

Formation

Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Metapelite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

Laterite is a type of sedimentary rock which is generally a reddish weathering product of basalt.

Composition

Mineral Content

Albite, Chlorite, Quartz

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

Compound Content

Aluminium Oxide, CaO, MgO

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

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5-62

1 7

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Grain Size

Medium to Fine Coarse Grained

Fine Grained

Fracture

Fibrous

Conchoidal

Streak

White

Porosity

Highly Porous

Luster

Earthy

Dull

Compressive Strength

40.00 N/mm²5.00 N/mm²

0.15 450

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Cleavage

Toughness

Specific Gravity

3.4-3.7-9999

0 8.4

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Transparency

Opaque

Density

0-300 g/cm³-9999 g/cm³

0 1400

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Thermal Properties

Specific Heat Capacity

0.72 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant

Heat Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

India

Africa

Western Africa

East Africa, Western Africa

Europe

United Kingdom

England, Romania, Scotland

Others

Deposits in Western Continents

North America

Canada, USA

South America

Brazil, Colombia, Ecuador

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

All about Metapelite and Laterite Properties

Know all about Metapelite and Laterite properties here. All properties of rocks are important as they define the type of rock and its application. Metapelite belongs to Metamorphic Rocks while Laterite belongs to Sedimentary Rocks.Texture of Metapelite is Foliated whereas that of Laterite is Earthy, Massive, Porphyritic. Metapelite appears Banded and Laterite appears Rough and Banded. The luster of Metapelite is earthy while that of Laterite is dull. Metapelite is available in dark greenish - grey, green, light green, light greenish grey colors whereas Laterite is available in brown, buff, red colors. The commercial uses of Metapelite are commemorative tablets, creating artwork and that of Laterite are an oil and gas reservoir, source of bauxite, used in aquariums.