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Mylonite vs Amphibolite


Amphibolite vs Mylonite


Definition

Definition
Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism   
Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase   

History
  
  

Origin
New Zealand   
Unknown   

Discoverer
Unknown   
Alexandre Brongniart   

Etymology
From Greek mulōn mill + -ite   
From Amphibole + -ite   

Class
Metamorphic Rocks   
Metamorphic Rocks   

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

Family
  
  

Group
Not Applicable   
Not Applicable   

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

Texture

Texture
Foliated   
Banded, Foliated, Massive   

Color
Black to Grey   
Black, Brown, Green, Grey   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
No   
Yes   

Wind Resistant
No   
No   

Acid Resistant
No   
Yes   

Appearance
Dull, Banded and Foilated   
Foliated   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Interior Decoration   
Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Kitchens   

Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration   
As Building Stone, As Facing Stone, Paving Stone, Office Buildings   

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
for Road Aggregate, Landscaping, Roadstone   
As Dimension Stone, Building houses or walls, Cobblestones, Construction Aggregate, for Road Aggregate, Landscaping, Production of Glass and Ceramics, Roadstone   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments   
Artifacts, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Creating Artwork, Gemstone, Jewelry   
Cemetery Markers, Commemorative Tablets, Creating Artwork   

Types

Types
Blastomylonites, Ultramylonites and Phyllonites   
Hornblendite   

Features
Surfaces are often shiny   
Clasts are smooth to touch, Matrix variable, Surfaces are often shiny   

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Used   
Used   

Fossils
Absent   
Absent   

Formation

Formation
Mylonites are ductilely deformed rocks formed by the accumulation of large shear strain, in ductile fault zones.   
Amphibolite is a coarse-grained metamorphic rock which forms by metamorphism of mafic igneous rocks like basalt and gabbro or from the metamorphism of clay-rich sedimentary rocks like marl or graywacke.   

Composition
  
  

Mineral Content
Porphyroblasts   
Amphibole, Andalusite, Biotite, Calcite, Epidote, Garnet, Hornblade, Kyanite, Magnetite, Olivine, Plagioclase, Pyroxene, Staurolite, Wollastonite   

Compound Content
Aluminium Oxide, Calcium Sulfate, Chromium(III) Oxide, Iron(III) Oxide, Magnesium Carbonate, Silicon Dioxide   
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
Not Applicable   
Not Applicable   

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

Types of Erosion
Chemical Erosion, Sea Erosion, Wind Erosion   
Chemical Erosion, Glacier Erosion, Sea Erosion, Wind Erosion   

Properties

Physical Properties
  
  

Hardness
3-4   
6-7   

Grain Size
Fine Grained   
Medium to Coarse Grained   

Fracture
Conchoidal   
Irregular to Conchoidal   

Streak
White   
White to Grey   

Porosity
Highly Porous   
Less Porous   

Luster
Shiny   
Vitreous to Dull   

Compressive Strength
1.28 N/mm2   
32
Not Available   

Cleavage
Conchoidal   
Irregular   

Toughness
Not Available   
2.3   

Specific Gravity
2.97-3.05   
2.5   

Transparency
Opaque   
Opaque   

Density
2.6-4.8 g/cm3   
2.85-3.07 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
1.50 kJ/Kg K   
3
Not Available   

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

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Indonesia, Saudi Arabia, South Korea   
Russia, Turkey   

Africa
Eritrea, Ethiopia, Ghana, South Africa, Western Africa   
Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda   

Europe
England, Finland, France, Germany, Great Britain, Greece, United Kingdom   
Germany, Greece, Iceland, Norway, Poland   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
USA   
Canada, USA   

South America
Not Yet Found   
Brazil   

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia   
South Australia, Western Australia   

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Mylonite vs Amphibolite 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 Mylonite and Amphibolite Reserves. Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism. Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase. 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 Mylonite vs Amphibolite information and Mylonite vs Amphibolite characteristics in the upcoming sections.

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Mylonite vs Amphibolite 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. Mylonite vs Amphibolite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Mylonite and Properties of Amphibolite. Learn more about Mylonite vs Amphibolite in the next section. The interior uses of Mylonite include Decorative aggregates and Interior decoration whereas the interior uses of Amphibolite include Countertops, Decorative aggregates, Entryways, Floor tiles, Flooring, Homes, Hotels and Kitchens. Due to some exceptional properties of Mylonite and Amphibolite, they have various applications in construction industry. The uses of Mylonite in construction industry include For road aggregate, Landscaping, Roadstone and that of Amphibolite include As dimension stone, Building houses or walls, Cobblestones, Construction aggregate, For road aggregate, Landscaping, Production of glass and ceramics, Roadstone.

More about Mylonite and Amphibolite

Here you can know more about Mylonite and Amphibolite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Mylonite and Amphibolite consists of mineral content and compound content. The mineral content of Mylonite includes Porphyroblasts and mineral content of Amphibolite includes Amphibole, Andalusite, Biotite, Calcite, Epidote, Garnet, Hornblade, Kyanite, Magnetite, Olivine, Plagioclase, Pyroxene, Staurolite, Wollastonite. You can also check out the list of all Metamorphic Rocks. When we have to compare Mylonite vs Amphibolite, the texture, color and appearance plays an important role in determining the type of rock. Mylonite is available in black to grey colors whereas, Amphibolite is available in black, brown, green, grey colors. Appearance of Mylonite is Dull, Banded and Foilated and that of Amphibolite is Foliated. Properties of rock is another aspect for Mylonite vs Amphibolite. The hardness of Mylonite is 3-4 and that of Amphibolite is 6-7. The types of Mylonite are Blastomylonites, Ultramylonites and Phyllonites whereas types of Amphibolite are Hornblendite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Mylonite is white while that of Amphibolite is white to grey. The specific heat capacity of Mylonite is 1.50 kJ/Kg K and that of Amphibolite is Not Available. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Mylonite is heat resistant, impact resistant, pressure resistant whereas Amphibolite is heat resistant, pressure resistant, wear resistant.

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