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Scoria and Taconite


Taconite and Scoria


Definition

Definition
Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities   
Taconite is a low-grade iron ore which belongs to sedimentary rock and containing about 27% iron and 51% silica   

History
  
  

Origin
Unknown   
Western Australia, Minnesota   

Discoverer
Unknown   
Newton Horace Winchell   

Etymology
From late Middle English (denoting slag from molten metal), from Greek skōria refuse, from skōr dung   
From the name of Taconic Mountains in New England   

Class
Igneous Rocks   
Sedimentary Rocks   

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

Family
  
  

Group
Volcanic   
Not Applicable   

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

Texture

Texture
Vesicular   
Banded, Trellis   

Color
Black, Brown, Dark Grey to Black, Red   
Red, Reddish Brown   

Maintenance
More   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
No   
No   

Wind Resistant
No   
Yes   

Acid Resistant
No   
No   

Appearance
Glassy and Vesicular   
Layered, Banded, Veined and Shiny   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
Cement Manufacture, Construction Aggregate, for Road Aggregate, In landscaping and drainage works   
As Dimension Stone, Used for flooring, stair treads, borders and window sills.   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments, Sculpture   
Artifacts   

Other Uses
  
  

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

Types

Types
Not Available   
Not Available   

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

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Used   
Used   

Fossils
Absent   
Present   

Formation

Formation
Scoria forms when magma containing huge amount of dissolved gas flows from a volcano during an eruption.   
Taconite is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. When the river reaches a lake or sea, its load of transported rocks settles or deposits at the bottom of sea or lake.   

Composition
  
  

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

Compound Content
Ca, NaCl   
Fe, Iron(III) Oxide, Silicon Dioxide   

Transformation
  
  

Metamorphism
Yes   
No   

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism   
Not Applicable   

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
5-6   
5.5-6   

Grain Size
Fine Grained   
Large and Coarse Grained   

Fracture
Conchoidal   
Uneven, Splintery or Conchoidal   

Streak
White   
White   

Porosity
Highly Porous   
Highly Porous   

Luster
Subvitreous to Dull   
Earthy   

Cleavage
Perfect   
Imperfect   

Toughness
2.1   
1.5   

Specific Gravity
Not Available   
5-5.3   

Transparency
Opaque   
Translucent to Opaque   

Density
Not Available   
Not Available   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
3.20 kJ/Kg K   
1

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Afghanistan, Indonesia, Japan, Russia   
China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam   

Africa
Ethiopia, Kenya, Tanzania   
Kenya, Morocco, South Africa, Tanzania   

Europe
Greece, Hungary, Iceland, Italy, Turkey   
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom   

Others
Not Yet Found   
Greenland, Mid-Atlantic Ridge   

Deposits in Western Continents
  
  

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

South America
Argentina, Chile, Ecuador, Peru   
Bolivia, Brazil   

Deposits in Oceania Continent
  
  

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

Summary >>
<< Reserves

All about Scoria and Taconite Properties

Know all about Scoria and Taconite properties here. All properties of rocks are important as they define the type of rock and its application. Scoria belongs to Igneous Rocks while Taconite belongs to Sedimentary Rocks.Texture of Scoria is Vesicular whereas that of Taconite is Banded, Trellis. Scoria appears Glassy and Vesicular and Taconite appears Layered, Banded, Veined and Shiny. The luster of Scoria is subvitreous to dull while that of Taconite is earthy. Scoria is available in black, brown, dark grey to black, red colors whereas Taconite is available in red, reddish brown colors. The commercial uses of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills and that of Taconite are as a touchstone, cemetery markers, creating artwork.

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