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Mylonite vs Pumice


Pumice 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   
Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals   

History
  
  

Origin
New Zealand   
Spain   

Discoverer
Unknown   
Unknown   

Etymology
From Greek mulōn mill + -ite   
From Old French pomis, from a Latin dialect variant of pumex   

Class
Metamorphic Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Volcanic   

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

Texture

Texture
Foliated   
Vesicular   

Color
Black to Grey   
Beige, Colourless, Grey, Light Green, Light Grey, Pink, White, Yellow- 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   
Vesicular   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Interior Decoration   
Decorative Aggregates, Flooring, Homes, 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, Powder   

Industry
  
  

Construction Industry
for Road Aggregate, Landscaping, Roadstone   
As Dimension Stone, Cement Manufacture, for Road Aggregate, In landscaping and horticulture, Making natural cement, Production of lightweight concrete blocks   

Medical Industry
Not Yet Used   
As an abrasive in skin exfoliating products, In Chemical and Pharmaceutical Industry, Medicines and Cosmetics   

Antiquity Uses
Artifacts, Monuments   
Artifacts   

Other Uses
  
  

Commercial Uses
Creating Artwork, Gemstone, Jewelry   
As a traction material on snow-covered roads, As an abrasive in pencil erasers, Fine abrasive used for polishing, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Used in aquariums   

Types

Types
Blastomylonites, Ultramylonites and Phyllonites   
Scoria   

Features
Surfaces are often shiny   
Host Rock for Lead   

Archaeological Significance
  
  

Monuments
Used   
Not Yet Used   

Famous Monuments
Data Not Available   
Not Applicable   

Sculpture
Used   
Not Yet Used   

Famous Sculptures
Data Not Available   
Not Applicable   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Used   
Not Yet Used   

Fossils
Absent   
Absent   

Formation

Formation
Mylonites are ductilely deformed rocks formed by the accumulation of large shear strain, in ductile fault zones.   
Pumice rock forms when the magma cools so quickly that atoms in the melt are not able to arrange themselves into a crystalline structure.   

Composition
  
  

Mineral Content
Porphyroblasts   
Aluminum Oxides, Calcite, Carbonate, Iron Oxides, Silica   

Compound Content
Aluminium Oxide, Calcium Sulfate, Chromium(III) Oxide, Iron(III) Oxide, Magnesium Carbonate, Silicon Dioxide   
Al, Aluminium Oxide, CaO, Carbon Dioxide, MgO, Silicon Dioxide   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Burial Metamorphism, Impact 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, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion   

Properties

Physical Properties
  
  

Hardness
3-4   
6   

Grain Size
Fine Grained   
Fine Grained   

Fracture
Conchoidal   
Planar   

Streak
White   
White, Greenish White or Grey   

Porosity
Highly Porous   
Highly Porous   

Luster
Shiny   
Earthy   

Compressive Strength
1.28 N/mm2   
32
51.20 N/mm2   
26

Cleavage
Conchoidal   
Perfect   

Toughness
Not Available   
3   

Specific Gravity
2.97-3.05   
2.86   

Transparency
Opaque   
Opaque   

Density
2.6-4.8 g/cm3   
0.25-0.3 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
1.50 kJ/Kg K   
3
0.87 kJ/Kg K   
14

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

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Indonesia, Saudi Arabia, South Korea   
Afghanistan, Indonesia, Japan, Russia   

Africa
Eritrea, Ethiopia, Ghana, South Africa, Western Africa   
Ethiopia, Kenya, Tanzania   

Europe
England, Finland, France, Germany, Great Britain, Greece, United Kingdom   
Greece, Hungary, Iceland, Italy, Turkey   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
USA   
Bahamas, Barbados, Canada, Costa Rica, Cuba, Jamaica, Mexico, USA   

South America
Not Yet Found   
Argentina, Chile, Ecuador, Peru   

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia   
New Zealand, Western Australia   

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Mylonite vs Pumice 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 Pumice 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. Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. 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 Pumice information and Mylonite vs Pumice characteristics in the upcoming sections.

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Mylonite vs Pumice 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 Pumice characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Mylonite and Properties of Pumice. Learn more about Mylonite vs Pumice in the next section. The interior uses of Mylonite include Decorative aggregates and Interior decoration whereas the interior uses of Pumice include Decorative aggregates, Flooring, Homes and Interior decoration. Due to some exceptional properties of Mylonite and Pumice, they have various applications in construction industry. The uses of Mylonite in construction industry include For road aggregate, Landscaping, Roadstone and that of Pumice include As dimension stone, Cement manufacture, For road aggregate, In landscaping and horticulture, Making natural cement, Production of lightweight concrete blocks.

More about Mylonite and Pumice

Here you can know more about Mylonite and Pumice. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Mylonite and Pumice consists of mineral content and compound content. The mineral content of Mylonite includes Porphyroblasts and mineral content of Pumice includes Aluminum Oxides, Calcite, Carbonate, Iron Oxides, Silica. You can also check out the list of all Metamorphic Rocks. When we have to compare Mylonite vs Pumice, the texture, color and appearance plays an important role in determining the type of rock. Mylonite is available in black to grey colors whereas, Pumice is available in beige, colourless, grey, light green, light grey, pink, white, yellow- grey colors. Appearance of Mylonite is Dull, Banded and Foilated and that of Pumice is Vesicular. Properties of rock is another aspect for Mylonite vs Pumice. The hardness of Mylonite is 3-4 and that of Pumice is 6. The types of Mylonite are Blastomylonites, Ultramylonites and Phyllonites whereas types of Pumice are Scoria. 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 Pumice is white, greenish white or grey. The specific heat capacity of Mylonite is 1.50 kJ/Kg K and that of Pumice is 0.87 kJ/Kg K. 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 Pumice is impact resistant, pressure resistant.

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