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Amphibolite vs Gossan


Gossan vs Amphibolite


Definition

Definition
Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase   
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.   

History
  
  

Origin
Unknown   
Indonesia   

Discoverer
Alexandre Brongniart   
Cornish Gossen   

Etymology
From Amphibole + -ite   
From Cornish gossen from gos, blood from Old Cornish guit   

Class
Metamorphic Rocks   
Metamorphic Rocks   

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

Family
  
  

Group
Not Applicable   
Not Applicable   

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

Texture

Texture
Banded, Foliated, Massive   
Rough, Sandy   

Color
Black, Brown, Green, Grey   
Brown, Brown- Black, Gold, Green, Rust   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
Yes   

Wind Resistant
No   
No   

Acid Resistant
Yes   
No   

Appearance
Foliated   
Dull and Banded   

Uses

Architecture
  
  

Interior Uses
Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Kitchens   
Countertops, Decorative Aggregates, Interior Decoration   

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Building houses or walls, Cobblestones, Construction Aggregate, for Road Aggregate, Landscaping, Production of Glass and Ceramics, Roadstone   
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Sculpture, Small Figurines   
Artifacts   

Other Uses
  
  

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

Types

Types
Hornblendite   
Translocated gossan and Leakage gossan   

Features
Clasts are smooth to touch, Matrix variable, Surfaces are often shiny   
Clasts are smooth to touch, Easily splits into thin plates   

Archaeological Significance
  
  

Monuments
Used   
Not Yet Used   

Famous Monuments
Data Not Available   
Not Applicable   

Sculpture
Used   
Not Yet Used   

Famous Sculptures
Data Not Available   
Not Applicable   

Pictographs
Not Used   
Used   

Petroglyphs
Not Used   
Used   

Figurines
Used   
Not Yet Used   

Fossils
Absent   
Absent   

Formation

Formation
Amphibolite is a coarse-grained metamorphic rock which forms by metamorphism of mafic igneous rocks like basalt and gabbro or from the metamorphism of clay-rich sedimentary rocks like marl or graywacke.   
Earth movements can cause rocks to be either deeply buried or squeezed and hence the rocks are heated and put under great pressure.   

Composition
  
  

Mineral Content
Amphibole, Andalusite, Biotite, Calcite, Epidote, Garnet, Hornblade, Kyanite, Magnetite, Olivine, Plagioclase, Pyroxene, Staurolite, Wollastonite   
Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon   

Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide   
Aluminium Oxide, CaO, Fe, FeO, Silicon Dioxide, Sulphur   

Transformation
  
  

Metamorphism
No   
No   

Types of Metamorphism
Not Applicable   
Not Applicable   

Weathering
Yes   
No   

Types of Weathering
Chemical Weathering, Mechanical Weathering   
Not Applicable   

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
6-7   
4-5   

Grain Size
Medium to Coarse Grained   
Fine to Medium Grained   

Fracture
Irregular to Conchoidal   
Conchoidal   

Streak
White to Grey   
White to Grey   

Porosity
Less Porous   
Highly Porous   

Luster
Vitreous to Dull   
Metallic   

Cleavage
Irregular   
Not Available   

Toughness
2.3   
Not Available   

Specific Gravity
2.5   
2.0   

Transparency
Opaque   
Opaque   

Density
2.85-3.07 g/cm3   
Not Available   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.24 kJ/Kg K   
24

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Russia, Turkey   
China, India, Indonesia, Russia, Singapore, South Korea   

Africa
Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda   
Cape Verde, Ethiopia, Ghana, South Africa, Western Africa   

Europe
Germany, Greece, Iceland, Norway, Poland   
Albania, France, Germany, Great Britain, United Kingdom   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, USA   
Canada, USA   

South America
Brazil   
Brazil, Colombia, Ecuador   

Deposits in Oceania Continent
  
  

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

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Amphibolite vs Gossan 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 Amphibolite and Gossan Reserves. Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase. Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.. 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 Amphibolite vs Gossan information and Amphibolite vs Gossan characteristics in the upcoming sections.

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Amphibolite vs Gossan 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. Amphibolite vs Gossan characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Amphibolite and Properties of Gossan. Learn more about Amphibolite vs Gossan in the next section. The interior uses of Amphibolite include Countertops, Decorative aggregates, Entryways, Floor tiles, Flooring, Homes, Hotels and Kitchens whereas the interior uses of Gossan include Countertops, Decorative aggregates and Interior decoration. Due to some exceptional properties of Amphibolite and Gossan, they have various applications in construction industry. The uses of Amphibolite in construction industry include As dimension stone, Building houses or walls, Cobblestones, Construction aggregate, For road aggregate, Landscaping, Production of glass and ceramics, Roadstone and that of Gossan include As dimension stone, Cement manufacture, Construction aggregate, For road aggregate.

More about Amphibolite and Gossan

Here you can know more about Amphibolite and Gossan. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Amphibolite and Gossan consists of mineral content and compound content. The mineral content of Amphibolite includes Amphibole, Andalusite, Biotite, Calcite, Epidote, Garnet, Hornblade, Kyanite, Magnetite, Olivine, Plagioclase, Pyroxene, Staurolite, Wollastonite and mineral content of Gossan includes Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon. You can also check out the list of all Igneous Rocks. When we have to compare Amphibolite vs Gossan, the texture, color and appearance plays an important role in determining the type of rock. Amphibolite is available in black, brown, green, grey colors whereas, Gossan is available in brown, brown- black, gold, green, rust colors. Appearance of Amphibolite is Foliated and that of Gossan is Dull and Banded. Properties of rock is another aspect for Amphibolite vs Gossan. The hardness of Amphibolite is 6-7 and that of Gossan is 4-5. The types of Amphibolite are Hornblendite whereas types of Gossan are Translocated gossan and Leakage gossan. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Amphibolite and Gossan is white to grey. The specific heat capacity of Amphibolite is Not Available and that of Gossan is 0.24 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Amphibolite is heat resistant, pressure resistant, wear resistant whereas Gossan is heat resistant, impact resistant, pressure resistant.

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