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Phyllite vs Andesite


Andesite vs Phyllite


Definition

Definition
Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks  
Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava  

History
  
  

Origin
-  
North America  

Discoverer
Unknown  
Theodor von Gümbel  

Etymology
From Greek phullon leaf + -ite1  
From Andes mountains, where it is found in abundance  

Class
Metamorphic Rocks  
Igneous Rocks  

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

Family
  
  

Group
-  
Volcanic  

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

Texture

Texture
Phyllitic Sheen, Slaty  
Aphanitic to Porphyritic  

Color
Black to Grey, Light Greenish Grey  
Bluish - Grey, Grey, Pink, Yellow  

Maintenance
More  
More  

Durability
Durable  
Durable  

Water Resistant
No  
No  

Scratch Resistant
No  
Yes  

Stain Resistant
No  
Yes  

Wind Resistant
No  
No  

Acid Resistant
No  
Yes  

Appearance
Crinkled or Wavy  
Dull and Soft  

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar, Roadstone  
Cobblestones, Construction Aggregate, for Road Aggregate  

Medical Industry
-  
-  

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

Other Uses
  
  

Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork, Writing Slates  
Commemorative Tablets, Creating Artwork  

Types

Types
Phyllite  
Icelandite  

Features
Easily splits into thin plates, Is one of the oldest rock, Surfaces are often shiny  
Generally rough to touch, High silica content, Is one of the oldest rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
Middle of the Earth in Ecuador  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Phyllite is a metamorphic rock which is formed by regional metamorphism of argillaceous sediments since their cleavage arose due to deviatoric stress.  
Andesite is a fine-grained igneous rock that forms when the magma is erupted onto the surface and is crystallized quickly.   

Composition
  
  

Mineral Content
Albite, Alusite, Amphibole, Apatite, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc, Zircon  
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Zircon  

Compound Content
CaO, Carbon Dioxide, MgO  
Silicon Dioxide  

Transformation
  
  

Metamorphism
No  
Yes  

Types of 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, Water Erosion, Wind Erosion  
Chemical Erosion, Coastal Erosion, Glacier Erosion  

Properties

Physical Properties
  
  

Hardness
1-2  
7  

Grain Size
Medium to Fine Coarse Grained  
Very fine-grained  

Fracture
Conchoidal  
Uneven  

Streak
White  
White  

Porosity
Highly Porous  
Less Porous  

Luster
Phyllitic  
Vitreous  

Compressive Strength
50.00 N/mm2  
39
225.00 N/mm2  
8

Cleavage
Crenulation and Pervasive  
-  

Toughness
1.2  
1.1  

Specific Gravity
2.72-2.73  
2.5-2.8  

Transparency
Opaque  
Opaque  

Density
2.18-3.3 g/cm3  
2.11-2.36 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.79 kJ/Kg K  
17
2.39 kJ/Kg K  
2

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam  
India, Indonesia, Japan, Nepal, South Korea  

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

Europe
Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland  
Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom  

Others
-  
-  

Deposits in Western Continents
  
  

North America
Canada, Costa Rica, Cuba, Mexico, Panama, USA  
Mexico, USA  

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

Deposits in Oceania Continent
  
  

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

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Phyllite 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 Phyllite and Andesite Reserves. Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks. 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 Phyllite vs Andesite information and Phyllite vs Andesite characteristics in the upcoming sections.

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Phyllite 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. Phyllite vs Andesite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Phyllite and Properties of Andesite. Learn more about Phyllite vs Andesite in the next section. The interior uses of Phyllite include Decorative aggregates, Floor tiles, 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 Phyllite and Andesite, they have various applications in construction industry. The uses of Phyllite in construction industry include As dimension stone, Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate, Raw material for the manufacture of mortar, Roadstone and that of Andesite include Cobblestones, Construction aggregate, For road aggregate.

More about Phyllite and Andesite

Here you can know more about Phyllite and Andesite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Phyllite and Andesite consists of mineral content and compound content. The mineral content of Phyllite includes Albite, Alusite, Amphibole, Apatite, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc, Zircon 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 Metamorphic Rocks. When we have to compare Phyllite vs Andesite, the texture, color and appearance plays an important role in determining the type of rock. Phyllite is available in black to grey, light greenish grey colors whereas, Andesite is available in bluish - grey, grey, pink, yellow colors. Appearance of Phyllite is Crinkled or Wavy and that of Andesite is Dull and Soft. Properties of rock is another aspect for Phyllite vs Andesite. The hardness of Phyllite is 1-2 and that of Andesite is 7. The types of Phyllite are Phyllite 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 Phyllite and Andesite is white. The specific heat capacity of Phyllite is 0.79 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.Phyllite is heat resistant, pressure resistant, water resistant whereas Andesite is heat resistant, pressure resistant, wear resistant.

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