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Gossan vs Anorthosite


Anorthosite vs Gossan


Definition

Definition
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.   
Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase   

History
  
  

Origin
Indonesia   
Unknown   

Discoverer
Cornish Gossen   
Unknown   

Etymology
From Cornish gossen from gos, blood from Old Cornish guit   
From French anorthose plagioclase + -ite1   

Class
Metamorphic Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture

Texture
Rough, Sandy   
Foliated, Glassy   

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

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
No   

Stain Resistant
Yes   
No   

Wind Resistant
No   
Yes   

Acid Resistant
No   
No   

Appearance
Dull and Banded   
Layered, Banded, Veined and Shiny   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate   
As Dimension Stone, Cement Manufacture, for Road Aggregate   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts   
Artifacts, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Cemetery Markers, Commemorative Tablets, Gemstone   
Creating Artwork, Curling   

Types

Types
Translocated gossan and Leakage gossan   
Proterozoic Anorthosite and Archean Anorthosite   

Features
Clasts are smooth to touch, Easily splits into thin plates   
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
Not Yet Used   
Used   

Famous Sculptures
Not Applicable   
Not Applicable   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Not Yet Used   
Used   

Fossils
Absent   
Absent   

Formation

Formation
Earth movements can cause rocks to be either deeply buried or squeezed and hence the rocks are heated and put under great pressure.   
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
Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon   
Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene   

Compound Content
Aluminium Oxide, CaO, Fe, FeO, Silicon Dioxide, Sulphur   
Ca, CaO, Chromium(III) Oxide, MgO, Sulfur Trioxide   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Cataclastic Metamorphism, Contact Metamorphism   

Weathering
No   
Yes   

Types of Weathering
Not Applicable   
Biological Weathering   

Erosion
Yes   
Yes   

Types of Erosion
Chemical Erosion, Sea Erosion, Wind Erosion   
Chemical Erosion, Wind Erosion   

Properties

Physical Properties
  
  

Hardness
4-5   
5-6   

Grain Size
Fine to Medium Grained   
Coarse Grained   

Fracture
Conchoidal   
Irregular   

Streak
White to Grey   
White   

Porosity
Highly Porous   
Less Porous   

Luster
Metallic   
Pearly to Subvitreous   

Cleavage
Not Available   
Irregular   

Toughness
Not Available   
Not Available   

Specific Gravity
2.0   
2.62-2.82   

Transparency
Opaque   
Translucent   

Density
Not Available   
2.7-4 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.24 kJ/Kg K   
24
0.84 kJ/Kg K   
15

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

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Indonesia, Russia, Singapore, South Korea   
Not Yet Found   

Africa
Cape Verde, Ethiopia, Ghana, South Africa, Western Africa   
Not Yet Found   

Europe
Albania, France, Germany, Great Britain, United Kingdom   
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, USA   
Canada   

South America
Brazil, Colombia, Ecuador   
Bolivia, Colombia   

Deposits in Oceania Continent
  
  

Australia
New South Wales, South Australia, Western Australia   
Central Australia, South Australia, Western Australia   

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Gossan 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 Gossan and Anorthosite Reserves. Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.. 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 Gossan vs Anorthosite information and Gossan vs Anorthosite characteristics in the upcoming sections.

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

More about Gossan and Anorthosite

Here you can know more about Gossan and Anorthosite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Gossan and Anorthosite consists of mineral content and compound content. The mineral content of Gossan includes Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, 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 Gossan vs Anorthosite, the texture, color and appearance plays an important role in determining the type of rock. Gossan is available in brown, brown- black, gold, green, rust colors whereas, Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors. Appearance of Gossan is Dull and Banded and that of Anorthosite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Gossan vs Anorthosite. The hardness of Gossan is 4-5 and that of Anorthosite is 5-6. The types of Gossan are Translocated gossan and Leakage gossan 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 Gossan is white to grey while that of Anorthosite is white. The specific heat capacity of Gossan is 0.24 kJ/Kg K 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.Gossan is heat resistant, impact resistant, pressure resistant whereas Anorthosite is heat resistant, impact resistant, pressure resistant, scratch resistant, wear resistant.

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