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Tephrite vs Andesite


Andesite vs Tephrite


Definition

Definition
Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock   
Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava   

History
  
  

Origin
Germany   
North America   

Discoverer
Van Tooren   
Unknown   

Etymology
From Greek tephra, ashes from Indo-European base, to burn   
From Andes mountains, where it is found in abundance   

Class
Igneous Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Volcanic   
Volcanic   

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

Texture

Texture
Aphanitic to Porphyritic   
Aphanitic to Porphyritic   

Color
Black, Brown, Colourless, Green, Grey, White   
Bluish - Grey, Grey, Pink, Yellow   

Maintenance
Less   
More   

Durability
Durable   
Durable   

Water Resistant
Yes   
No   

Scratch Resistant
Yes   
Yes   

Stain Resistant
No   
Yes   

Wind Resistant
Yes   
No   

Acid Resistant
No   
Yes   

Appearance
Vesicular   
Dull and Soft   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
Landscaping   
Cobblestones, Construction Aggregate, for Road Aggregate   

Medical Industry
Not Yet Used   
Not Yet Used   

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

Other Uses
  
  

Commercial Uses
Production of Lime, Soil Conditioner   
Commemorative Tablets, Creating Artwork   

Types

Types
Not Available   
Icelandite   

Features
Host Rock for Lead   
Generally rough to touch, High silica content, Is one of the oldest rock   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Used   

Famous Monuments
Not Applicable   
Middle of the Earth in Ecuador   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Not Used   
Not Used   

Petroglyphs
Not Used   
Not Used   

Figurines
Used   
Used   

Fossils
Absent   
Absent   

Formation

Formation
Tephrite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.   
Andesite is a fine-grained igneous rock that forms when the magma is erupted onto the surface and is crystallized quickly.   

Composition
  
  

Mineral Content
Alkali feldspar, Nepheline, Plagioclase, Pyroxene   
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Zircon   

Compound Content
CaO, Carbon Dioxide, MgO, Silicon Dioxide   
Silicon Dioxide   

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Cataclastic Metamorphism, Contact 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, Sea Erosion, Water Erosion   
Chemical Erosion, Coastal Erosion, Glacier Erosion   

Properties

Physical Properties
  
  

Hardness
6.5   
7   

Grain Size
Medium to Fine Coarse Grained   
Very fine-grained   

Fracture
Uneven   
Uneven   

Streak
Bluish Black   
White   

Porosity
Very Less Porous   
Less Porous   

Luster
Subvitreous to Dull   
Vitreous   

Compressive Strength
90.00 N/mm2   
22
225.00 N/mm2   
7

Cleavage
Crenulation and Pervasive   
Not Available   

Toughness
2.4   
1.1   

Specific Gravity
2.86   
2.5-2.8   

Transparency
Opaque   
Opaque   

Density
2.8-2.9 g/cm3   
2.11-2.36 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.92 kJ/Kg K   
10
2.39 kJ/Kg K   
2

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Not Yet Found   
India, Indonesia, Japan, Nepal, South Korea   

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

Europe
Germany, Hungary, Italy, Portugal, Spain   
Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
USA   
Mexico, USA   

South America
Not Yet Found   
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela   

Deposits in Oceania Continent
  
  

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

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Tephrite vs Andesite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Tephrite and Andesite Reserves. Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock. Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Tephrite vs Andesite information and Tephrite vs Andesite characteristics in the upcoming sections.

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Tephrite vs Andesite Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Tephrite vs Andesite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Tephrite and Properties of Andesite. Learn more about Tephrite vs Andesite in the next section. The interior uses of Tephrite include Decorative aggregates, Flooring, Homes and Interior decoration whereas the interior uses of Andesite include Decorative aggregates, Floor tiles, Homes, Interior decoration and Kitchens. Due to some exceptional properties of Tephrite and Andesite, they have various applications in construction industry. The uses of Tephrite in construction industry include Landscaping and that of Andesite include Cobblestones, Construction aggregate, For road aggregate.

More about Tephrite and Andesite

Here you can know more about Tephrite and Andesite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Tephrite and Andesite consists of mineral content and compound content. The mineral content of Tephrite includes Alkali feldspar, Nepheline, Plagioclase, Pyroxene and mineral content of Andesite includes Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Zircon. You can also check out the list of all Igneous Rocks. When we have to compare Tephrite vs Andesite, the texture, color and appearance plays an important role in determining the type of rock. Tephrite is available in black, brown, colourless, green, grey, white colors whereas, Andesite is available in bluish - grey, grey, pink, yellow colors. Appearance of Tephrite is Vesicular and that of Andesite is Dull and Soft. Properties of rock is another aspect for Tephrite vs Andesite. The hardness of Tephrite is 6.5 and that of Andesite is 7. The types of Tephrite are Not Available whereas types of Andesite are Icelandite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Tephrite is bluish black while that of Andesite is white. The specific heat capacity of Tephrite is 0.92 kJ/Kg K and that of Andesite is 2.39 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Tephrite is heat resistant, impact resistant whereas Andesite is heat resistant, pressure resistant, wear resistant.

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