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Metapelite and Laterite


Laterite and Metapelite


Definition

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

Texture
Foliated  
Earthy, Massive, Porphyritic  

Color
Dark Greenish - Grey, Green, Light Green, Light Greenish Grey  
Brown, Buff, Red  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
No  

Scratch Resistant
Yes  
No  

Stain Resistant
Yes  
No  

Wind Resistant
No  
No  

Acid Resistant
No  
No  

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  
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

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

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
No  
No  

Types of Metamorphism
-  
-  

Weathering
Yes  
Yes  

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering  
Biological Weathering, Chemical Weathering  

Erosion
Yes  
Yes  

Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion  
Chemical Erosion, Water Erosion, Wind Erosion  

Properties

Physical Properties
  
  

Hardness
5-6  
2  

Grain Size
Medium to Fine Coarse Grained  
Fine Grained  

Fracture
Fibrous  
Conchoidal  

Streak
-  
White  

Porosity
Highly Porous  
Highly Porous  

Luster
Earthy  
Dull  

Compressive Strength
40.00 N/mm2  
40
5.00 N/mm2  
99+

Cleavage
-  
-  

Toughness
-  
-  

Specific Gravity
3.4-3.7  
-9999  

Transparency
Opaque  
Opaque  

Density
0-300 g/cm3  
-9999 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.72 kJ/Kg K  
22
0.92 kJ/Kg K  
10

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  
Central Australia, Western Australia  

Summary >>
<< Reserves

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.

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