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Phyllite vs Adakite


Adakite 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  
Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs  

History
  
  

Origin
-  
Adak, Aleutian Islands  

Discoverer
Unknown  
Defant and Drummond  

Etymology
From Greek phullon leaf + -ite1  
From Adak, Aleutian Islands  

Class
Metamorphic Rocks  
Igneous Rocks  

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

Family
  
  

Group
-  
Volcanic  

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

Texture

Texture
Phyllitic Sheen, Slaty  
Porphyritic  

Color
Black to Grey, Light Greenish Grey  
Black, Brown, Light to Dark Grey  

Maintenance
More  
Less  

Durability
Durable  
Durable  

Water Resistant
No  
No  

Scratch Resistant
No  
No  

Stain Resistant
No  
No  

Wind Resistant
No  
Yes  

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, Hotels, Kitchens  

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

Other Architectural Uses
Curbing  
Whetstones  

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  
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Sculpture  
Monuments, Sculpture, Small Figurines  

Other Uses
  
  

Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork, Writing Slates  
Commemorative Tablets, Pottery, Used in aquariums  

Types

Types
Phyllite  
Intermediate volcanic rock  

Features
Easily splits into thin plates, Is one of the oldest rock, Surfaces are often shiny  
Has High structural resistance against erosion and climate, Host rock for Diamond, Very fine grained rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

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.  
Adakite rocks are formed when the hydrous fluids are released from minerals that break down in metamorphosed basalt, and rise into the mantle they initiate partial melting.  

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  
Olivine, Plagioclase, Pyroxene  

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

Transformation
  
  

Metamorphism
No  
Yes  

Types of Metamorphism
-  
Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism  

Weathering
Yes  
Yes  

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

Erosion
Yes  
Yes  

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

Properties

Physical Properties
  
  

Hardness
1-2  
3-4  

Grain Size
Medium to Fine Coarse Grained  
Fine to Medium Grained  

Fracture
Conchoidal  
Conchoidal  

Streak
White  
Bluish Black  

Porosity
Highly Porous  
Less Porous  

Luster
Phyllitic  
Grainy, Pearly and Vitreous  

Compressive Strength
50.00 N/mm2  
39
200.00 N/mm2  
13

Cleavage
Crenulation and Pervasive  
-  

Toughness
1.2  
-  

Specific Gravity
2.72-2.73  
-9999  

Transparency
Opaque  
Opaque  

Density
2.18-3.3 g/cm3  
-9999 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.79 kJ/Kg K  
17
0.84 kJ/Kg K  
15

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, Russia  

Africa
Egypt, Ethiopia, Morocco, Nigeria, South Africa  
Ethiopia, Somalia, South Africa  

Europe
Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland  
Iceland  

Others
-  
-  

Deposits in Western Continents
  
  

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

South America
Brazil, Colombia, Guyana  
Brazil  

Deposits in Oceania Continent
  
  

Australia
New South Wales, New Zealand, Queensland  
-  

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Phyllite vs Adakite 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 Adakite Reserves. Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks. Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs. 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 Adakite information and Phyllite vs Adakite characteristics in the upcoming sections.

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Phyllite vs Adakite 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 Adakite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Phyllite and Properties of Adakite. Learn more about Phyllite vs Adakite in the next section. The interior uses of Phyllite include Decorative aggregates, Floor tiles, Homes and Interior decoration whereas the interior uses of Adakite include Decorative aggregates, Floor tiles, Homes, Hotels and Kitchens. Due to some exceptional properties of Phyllite and Adakite, 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 Adakite include As dimension stone, Cobblestones, Rail track ballast, Roadstone.

More about Phyllite and Adakite

Here you can know more about Phyllite and Adakite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Phyllite and Adakite 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 Adakite includes Olivine, Plagioclase, Pyroxene. You can also check out the list of all Metamorphic Rocks. When we have to compare Phyllite vs Adakite, 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, Adakite is available in black, brown, light to dark grey colors. Appearance of Phyllite is Crinkled or Wavy and that of Adakite is Dull and Soft. Properties of rock is another aspect for Phyllite vs Adakite. The hardness of Phyllite is 1-2 and that of Adakite is 3-4. The types of Phyllite are Phyllite whereas types of Adakite are Intermediate volcanic rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Phyllite is white while that of Adakite is bluish black. The specific heat capacity of Phyllite is 0.79 kJ/Kg K and that of Adakite is 0.84 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 Adakite is heat resistant, pressure resistant, wear resistant.

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