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Andesite and Peridotite


Peridotite and Andesite


Definition

Definition
Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava   
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle   

History
  
  

Origin
North America   
Pike County, U.S   

Discoverer
Unknown   
Unknown   

Etymology
From Andes mountains, where it is found in abundance   
From French, from peridot +‎ -ite   

Class
Igneous Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Medium Hardness Rock   

Family
  
  

Group
Volcanic   
Plutonic   

Other Categories
Fine Grained Rock, Opaque Rock   
Coarse Grained Rock, Opaque Rock   

Texture

Texture
Aphanitic to Porphyritic   
Phaneritic   

Color
Bluish - Grey, Grey, Pink, Yellow   
Dark Greenish - Grey   

Maintenance
More   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
No   

Wind Resistant
No   
No   

Acid Resistant
Yes   
No   

Appearance
Dull and Soft   
Rough and Shiny   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration, Kitchens   
Decorative Aggregates, Interior Decoration   

Exterior Uses
Office Buildings, Roof Tiles   
As Building Stone, As Facing Stone, Garden Decoration   

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
Cobblestones, Construction Aggregate, for Road Aggregate   
As Dimension Stone, Cobblestones   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines   
Monuments, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Commemorative Tablets, Creating Artwork   
Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds   

Types

Types
Icelandite   
Dunite, Wehrlite, Harzburgite, Lherzolite and Pyrolite   

Features
Generally rough to touch, High silica content, Is one of the oldest rock   
Constitutes upper part of the Earth's mantle, Generally rough to touch, Host rock for Diamond, Is one of the oldest rock   

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Middle of the Earth in Ecuador   
Data Not Available   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Not Used   
Used   

Petroglyphs
Not Used   
Used   

Figurines
Used   
Used   

Fossils
Absent   
Absent   

Formation

Formation
Andesite is a fine-grained igneous rock that forms when the magma is erupted onto the surface and is crystallized quickly.   
Peridotites can be formed in two ways: as mantle rocks formed during the accretion and differentiation of the Earth or as cumulate rocks formed by precipitation of olivine and pyroxenes from basaltic magmas.   

Composition
  
  

Mineral Content
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Zircon   
Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene   

Compound Content
Silicon Dioxide   
Ca, Fe, Mg, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide   

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism   
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism   

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion   
Chemical Erosion   

Properties

Physical Properties
  
  

Hardness
7   
5.5-6   

Grain Size
Very fine-grained   
Coarse Grained   

Fracture
Uneven   
Irregular   

Streak
White   
White   

Porosity
Less Porous   
Less Porous   

Luster
Vitreous   
Shiny   

Compressive Strength
225.00 N/mm2   
7
107.55 N/mm2   
19

Cleavage
Not Available   
Imperfect   

Toughness
1.1   
2.1   

Specific Gravity
2.5-2.8   
3-3.01   

Transparency
Opaque   
Translucent to Opaque   

Density
2.11-2.36 g/cm3   
3.1-3.4 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
2.39 kJ/Kg K   
2
1.26 kJ/Kg K   
5

Resistance
Heat Resistant, Pressure Resistant, Wear Resistant   
Heat Resistant, Pressure Resistant, Wear Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Indonesia, Japan, Nepal, South Korea   
China, India, Indonesia, Kazakhstan, Russia, South Korea, Thailand, Turkey   

Africa
Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania   
Morocco, South Africa   

Europe
Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom   
Finland, France, Georgia, Germany, Great Britain, Italy, Kazakhstan, Netherlands, Norway, Spain, Switzerland, Venezuela   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Mexico, USA   
Canada, USA   

South America
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela   
Brazil   

Deposits in Oceania Continent
  
  

Australia
New South Wales, New Zealand, Western Australia   
New Zealand, Western Australia   

Summary >>
<< Reserves

All about Andesite and Peridotite Properties

Know all about Andesite and Peridotite properties here. All properties of rocks are important as they define the type of rock and its application. Andesite and Peridotite belong to Igneous Rocks.Texture of Andesite is Aphanitic to Porphyritic whereas that of Peridotite is Phaneritic. Andesite appears Dull and Soft and Peridotite appears Rough and Shiny. The luster of Andesite is vitreous while that of Peridotite is shiny. Andesite is available in bluish - grey, grey, pink, yellow colors whereas Peridotite is available in dark greenish - grey colors. The commercial uses of Andesite are commemorative tablets, creating artwork and that of Peridotite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.

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