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Pumice vs Scoria


Scoria vs Pumice


Definition

Definition
Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals   
Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities   

History
  
  

Origin
Spain   
Unknown   

Discoverer
Unknown   
Unknown   

Etymology
From Old French pomis, from a Latin dialect variant of pumex   
From late Middle English (denoting slag from molten metal), from Greek skōria refuse, from skōr dung   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Volcanic   
Volcanic   

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

Texture

Texture
Vesicular   
Vesicular   

Color
Beige, Colourless, Grey, Light Green, Light Grey, Pink, White, Yellow- grey   
Black, Brown, Dark Grey to Black, Red   

Maintenance
Less   
More   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
No   

Wind Resistant
No   
No   

Acid Resistant
Yes   
No   

Appearance
Vesicular   
Glassy and Vesicular   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing, Powder   
Curbing   

Industry
  
  

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

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

Antiquity Uses
Artifacts   
Artifacts, Monuments, Sculpture   

Other Uses
  
  

Commercial Uses
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   
As a traction material on snow-covered roads, Creating Artwork, High-temperature insulation, In gas barbecue grills   

Types

Types
Scoria   
Not Available   

Features
Host Rock for Lead   
Available in Lots of Colors and Patterns, Generally rough to touch, Surfaces are often shiny   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Used   

Famous Monuments
Not Applicable   
Data Not Available   

Sculpture
Not Yet Used   
Used   

Famous Sculptures
Not Applicable   
Data Not Available   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Not Yet Used   
Used   

Fossils
Absent   
Absent   

Formation

Formation
Pumice rock forms when the magma cools so quickly that atoms in the melt are not able to arrange themselves into a crystalline structure.   
Scoria forms when magma containing huge amount of dissolved gas flows from a volcano during an eruption.   

Composition
  
  

Mineral Content
Aluminum Oxides, Calcite, Carbonate, Iron Oxides, Silica   
Apatite, Biotite, Calcite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz, Silica   

Compound Content
Al, Aluminium Oxide, CaO, Carbon Dioxide, MgO, Silicon Dioxide   
Ca, NaCl   

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Burial Metamorphism, Impact 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, Sea Erosion, Water Erosion, Wind Erosion   
Chemical Erosion, Coastal Erosion, Glacier Erosion   

Properties

Physical Properties
  
  

Hardness
6   
5-6   

Grain Size
Fine Grained   
Fine Grained   

Fracture
Planar   
Conchoidal   

Streak
White, Greenish White or Grey   
White   

Porosity
Highly Porous   
Highly Porous   

Luster
Earthy   
Subvitreous to Dull   

Compressive Strength
51.20 N/mm2   
26
Not Available   

Cleavage
Perfect   
Perfect   

Toughness
3   
2.1   

Specific Gravity
2.86   
Not Available   

Transparency
Opaque   
Opaque   

Density
0.25-0.3 g/cm3   
Not Available   

Thermal Properties
  
  

Specific Heat Capacity
0.87 kJ/Kg K   
14
Not Available   

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Afghanistan, Indonesia, Japan, Russia   
Afghanistan, Indonesia, Japan, Russia   

Africa
Ethiopia, Kenya, Tanzania   
Ethiopia, Kenya, Tanzania   

Europe
Greece, Hungary, Iceland, Italy, Turkey   
Greece, Hungary, Iceland, Italy, Turkey   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

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

South America
Argentina, Chile, Ecuador, Peru   
Argentina, Chile, Ecuador, Peru   

Deposits in Oceania Continent
  
  

Australia
New Zealand, Western Australia   
New Zealand, Western Australia   

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

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

More about Pumice and Scoria

Here you can know more about Pumice and Scoria. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Pumice and Scoria consists of mineral content and compound content. The mineral content of Pumice includes Aluminum Oxides, Calcite, Carbonate, Iron Oxides, Silica 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 Igneous Rocks. When we have to compare Pumice vs Scoria, the texture, color and appearance plays an important role in determining the type of rock. Pumice is available in beige, colourless, grey, light green, light grey, pink, white, yellow- grey colors whereas, Scoria is available in black, brown, dark grey to black, red colors. Appearance of Pumice is Vesicular and that of Scoria is Glassy and Vesicular. Properties of rock is another aspect for Pumice vs Scoria. The hardness of Pumice is 6 and that of Scoria is 5-6. The types of Pumice are Scoria whereas types of Scoria are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Pumice and Scoria is white, greenish white or grey. The specific heat capacity of Pumice is 0.87 kJ/Kg K and that of Scoria is Not Available. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Pumice is impact resistant, pressure resistant whereas Scoria is heat resistant, impact resistant, pressure resistant, wear resistant.

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