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Phyllite vs Anorthosite


Anorthosite 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   
Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From Greek phullon leaf + -ite1   
From French anorthose plagioclase + -ite1   

Class
Metamorphic Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture

Texture
Phyllitic Sheen, Slaty   
Foliated, Glassy   

Color
Black to Grey, Light Greenish Grey   
Black, Bluish - Grey, Brown, Green, Grey, Light Greenish Grey, Pink, White   

Maintenance
More   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
Yes   

Scratch Resistant
No   
No   

Stain Resistant
No   
No   

Wind Resistant
No   
Yes   

Acid Resistant
No   
No   

Appearance
Crinkled or Wavy   
Layered, Banded, Veined and Shiny   

Uses

Architecture
  
  

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

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

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   
As Dimension Stone, Cement Manufacture, for Road Aggregate   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Sculpture   
Artifacts, Sculpture, Small Figurines   

Other Uses
  
  

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

Types

Types
Not Available   
Proterozoic Anorthosite and Archean Anorthosite   

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

Archaeological Significance
  
  

Monuments
Not Yet Used   
Not Yet Used   

Famous Monuments
Not Applicable   
Not Applicable   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Not Applicable   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Used   
Used   

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.   
Anorthosite is a phaneritic, intrusive igneous rock which is characterized by a predominance of plagioclase feldspar which is almost 90–100%, and a minimal mafic component.   

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, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene   

Compound Content
CaO, Carbon Dioxide, MgO   
Ca, CaO, Chromium(III) Oxide, MgO, Sulfur Trioxide   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Cataclastic Metamorphism, Contact Metamorphism   

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
1-2   
5-6   

Grain Size
Medium to Fine Coarse Grained   
Coarse Grained   

Fracture
Conchoidal   
Irregular   

Streak
White   
White   

Porosity
Highly Porous   
Less Porous   

Luster
Phyllitic   
Pearly to Subvitreous   

Cleavage
Crenulation and Pervasive   
Irregular   

Toughness
1.2   
Not Available   

Specific Gravity
2.72-2.73   
2.62-2.82   

Transparency
Opaque   
Translucent   

Density
2.18-3.3 g/cm3   
2.7-4 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.84 kJ/Kg K   
15

Resistance
Heat Resistant, Pressure Resistant, Water Resistant   
Heat Resistant, Impact Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam   
Not Yet Found   

Africa
Egypt, Ethiopia, Morocco, Nigeria, South Africa   
Not Yet Found   

Europe
Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland   
Bulgaria, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Malta, Poland, Portugal, Romania, Slovenia, Spain, Sweden, The Czech Republic   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

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

South America
Brazil, Colombia, Guyana   
Bolivia, Colombia   

Deposits in Oceania Continent
  
  

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

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Phyllite vs Anorthosite 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 Anorthosite Reserves. Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks. Anorthosite is a granular igneous rock composed largely of labradorite or 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 Phyllite vs Anorthosite information and Phyllite vs Anorthosite characteristics in the upcoming sections.

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Phyllite vs Anorthosite 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 Anorthosite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Phyllite and Properties of Anorthosite. Learn more about Phyllite vs Anorthosite in the next section. The interior uses of Phyllite include Decorative aggregates, Floor tiles, Homes and Interior decoration whereas the interior uses of Anorthosite include Decorative aggregates, Floor tiles, Homes and Interior decoration. Due to some exceptional properties of Phyllite and Anorthosite, 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 Anorthosite include As dimension stone, Cement manufacture, For road aggregate.

More about Phyllite and Anorthosite

Here you can know more about Phyllite and Anorthosite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Phyllite and Anorthosite 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 Anorthosite includes Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene. You can also check out the list of all Metamorphic Rocks. When we have to compare Phyllite vs Anorthosite, 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, Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors. Appearance of Phyllite is Crinkled or Wavy and that of Anorthosite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Phyllite vs Anorthosite. The hardness of Phyllite is 1-2 and that of Anorthosite is 5-6. The types of Phyllite are Not Available whereas types of Anorthosite are Proterozoic Anorthosite and Archean Anorthosite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Phyllite and Anorthosite is white. The specific heat capacity of Phyllite is Not Available and that of Anorthosite 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 Anorthosite is heat resistant, impact resistant, pressure resistant, scratch resistant, wear resistant.

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