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Phyllite vs Scoria


Scoria 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  
Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities  

History
  
  

Origin
-  
-  

Discoverer
Unknown  
Unknown  

Etymology
From Greek phullon leaf + -ite1  
From late Middle English (denoting slag from molten metal), from Greek skōria refuse, from skōr dung  

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, Opaque Rock  

Texture

Texture
Phyllitic Sheen, Slaty  
Vesicular  

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

Maintenance
More  
More  

Durability
Durable  
Durable  

Water Resistant
No  
Yes  

Scratch Resistant
No  
Yes  

Stain Resistant
No  
No  

Wind Resistant
No  
No  

Acid Resistant
No  
No  

Appearance
Crinkled or Wavy  
Glassy and Vesicular  

Uses

Architecture
  
  

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

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

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  
Cement Manufacture, Construction Aggregate, for Road Aggregate, In landscaping and drainage works  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Sculpture  
Artifacts, Monuments, Sculpture  

Other Uses
  
  

Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork, Writing Slates  
As a traction material on snow-covered roads, Creating Artwork, High-temperature insulation, In gas barbecue grills  

Types

Types
Phyllite  
Basaltic Scoria and Andesitic Scoria  

Features
Easily splits into thin plates, Is one of the oldest rock, Surfaces are often shiny  
Available in Lots of Colors and Patterns, Generally rough to touch, Surfaces are often shiny  

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.  
Scoria forms when magma containing huge amount of dissolved gas flows from a volcano during an eruption.  

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  
Apatite, Biotite, Calcite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz, Silica  

Compound Content
CaO, Carbon Dioxide, MgO  
Ca, NaCl  

Transformation
  
  

Metamorphism
No  
Yes  

Types of Metamorphism
-  
Burial Metamorphism, Cataclastic Metamorphism, Contact 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  
5-6  

Grain Size
Medium to Fine Coarse Grained  
Fine Grained  

Fracture
Conchoidal  
Conchoidal  

Streak
White  
White  

Porosity
Highly Porous  
Highly Porous  

Luster
Phyllitic  
Subvitreous to Dull  

Compressive Strength
50.00 N/mm2  
39
70.00 N/mm2  
35

Cleavage
Crenulation and Pervasive  
Perfect  

Toughness
1.2  
2.1  

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, Impact Resistant, Pressure Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

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

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

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

Others
-  
-  

Deposits in Western Continents
  
  

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

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

Deposits in Oceania Continent
  
  

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

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Phyllite vs Scoria 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 Scoria Reserves. Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks. Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities. 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 Scoria information and Phyllite vs Scoria characteristics in the upcoming sections.

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

More about Phyllite and Scoria

Here you can know more about Phyllite and Scoria. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Phyllite and Scoria 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 Scoria includes Apatite, Biotite, Calcite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz, Silica. You can also check out the list of all Metamorphic Rocks. When we have to compare Phyllite vs Scoria, 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, Scoria is available in black, brown, dark grey to black, red colors. Appearance of Phyllite is Crinkled or Wavy and that of Scoria is Glassy and Vesicular. Properties of rock is another aspect for Phyllite vs Scoria. The hardness of Phyllite is 1-2 and that of Scoria is 5-6. The types of Phyllite are Phyllite whereas types of Scoria are Basaltic Scoria and Andesitic Scoria. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Phyllite and Scoria is white. The specific heat capacity of Phyllite is 0.79 kJ/Kg K and that of Scoria 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 Scoria is heat resistant, impact resistant, pressure resistant, wear resistant.

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