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Mylonite and Wehrlite


Wehrlite and 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   
Wehrlite is an ultramafic and ultrabasic rock that is a mixture of olivine and clinopyroxene. It is a subdivision of the peridotites   

History
  
  

Origin
New Zealand   
Egypt   

Discoverer
Unknown   
Alois Wehrle   

Etymology
From Greek mulōn mill + -ite   
From the name of a professor, Alois Wehrle   

Class
Metamorphic Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture

Texture
Foliated   
Banded   

Color
Black to Grey   
Dark Greenish - Grey, Green   

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   
No   

Appearance
Dull, Banded and Foilated   
Rough and Banded   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Interior Decoration   
Decorative Aggregates, Interior Decoration   

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

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

Medical Industry
Not Yet Used   
NA   

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

Other Uses
  
  

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

Types

Types
Blastomylonites, Ultramylonites and Phyllonites   
Not Available   

Features
Surfaces are often shiny   
Constitutes upper part of the Earth's mantle, Generally rough to touch, Is one of the oldest rock   

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   
Used   

Petroglyphs
Used   
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.   
Wehrlite 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.   

Composition
  
  

Mineral Content
Porphyroblasts   
Pyroxene   

Compound Content
Aluminium Oxide, Calcium Sulfate, Chromium(III) Oxide, Iron(III) Oxide, Magnesium Carbonate, Silicon Dioxide   
Aluminium Oxide, CaO, Carbon Dioxide, Iron(III) Oxide, FeO, Potassium Oxide, MgO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Burial Metamorphism, Cataclastic Metamorphism, Contact 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, Sea Erosion, Wind Erosion   
Chemical Erosion, Coastal Erosion, Water Erosion   

Properties

Physical Properties
  
  

Hardness
3-4   
5.5-6   

Grain Size
Fine Grained   
Coarse Grained   

Fracture
Conchoidal   
Irregular   

Streak
White   
White   

Porosity
Highly Porous   
Less Porous   

Luster
Shiny   
Metallic   

Compressive Strength
1.28 N/mm2   
32
Not Available   

Cleavage
Conchoidal   
Perfect   

Toughness
Not Available   
2.1   

Specific Gravity
2.97-3.05   
8.4   

Transparency
Opaque   
Opaque   

Density
2.6-4.8 g/cm3   
2.6-3.7 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
1.50 kJ/Kg K   
3
0.63 kJ/Kg K   
21

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

Reserves

Deposits in Eastern Continents
  
  

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

Africa
Eritrea, Ethiopia, Ghana, South Africa, Western Africa   
Morocco, South Africa   

Europe
England, Finland, France, Germany, Great Britain, Greece, 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
USA   
Canada, USA   

South America
Not Yet Found   
Brazil   

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia   
New Zealand, Western Australia   

Summary >>
<< Reserves

All about Mylonite and Wehrlite Properties

Know all about Mylonite and Wehrlite properties here. All properties of rocks are important as they define the type of rock and its application. Mylonite belongs to Metamorphic Rocks while Wehrlite belongs to Igneous Rocks.Texture of Mylonite is Foliated whereas that of Wehrlite is Banded. Mylonite appears Dull, Banded and Foilated and Wehrlite appears Rough and Banded. The luster of Mylonite is shiny while that of Wehrlite is metallic. Mylonite is available in black to grey colors whereas Wehrlite is available in dark greenish - grey, green colors. The commercial uses of Mylonite are creating artwork, gemstone, jewelry and that of Wehrlite are cemetery markers, creating artwork, gemstone, jewelry.

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