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Trondhjemite vs Gossan


Gossan vs Trondhjemite


Definition

Definition
Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.  
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.  

History
  
  

Origin
Tonale, Italy  
Indonesia  

Discoverer
Unknown  
Cornish Gossen  

Etymology
From Trondheim, Norway  
From Cornish gossen from gos, blood from Old Cornish guit  

Class
Igneous Rocks  
Metamorphic Rocks  

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

Family
  
  

Group
Plutonic  
-  

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

Texture

Texture
Phaneritic  
Rough, Sandy  

Color
Black, Brown, Light to Dark Grey, White  
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
No  
No  

Appearance
Banded and Foilated  
Dull and Banded  

Uses

Architecture
  
  

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

Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, 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, Cement Manufacture, Cobblestones, Construction Aggregate, for Road Aggregate  
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines  
Artifacts  

Other Uses
  
  

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

Types

Types
Intermediate intrusive rock  
Translocated gossan and Leakage gossan  

Features
Is one of the oldest rock, Typically speckled black and white.  
Clasts are smooth to touch, Easily splits into thin plates  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
When alkali feldspar is extracted from granite, it changes to granitoid and later, it becomes trondhjemite with quartz as major mineral.  
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
Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon  
Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon  

Compound Content
NaCl, CaO, MgO, Silicon Dioxide  
Aluminium Oxide, CaO, Fe, FeO, Silicon Dioxide, Sulphur  

Transformation
  
  

Metamorphism
Yes  
No  

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism  
-  

Weathering
Yes  
No  

Types of 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, Sea Erosion, Wind Erosion  

Properties

Physical Properties
  
  

Hardness
6-7  
4-5  

Grain Size
Medium to Fine Coarse Grained  
Fine to Medium Grained  

Fracture
Conchoidal  
Conchoidal  

Streak
Bluish Black  
White to Grey  

Porosity
Very Less Porous  
Highly Porous  

Luster
Subvitreous to Dull  
Metallic  

Compressive Strength
130.00 N/mm2  
24
-  

Cleavage
-  
-  

Toughness
2.1  
-  

Specific Gravity
2.86-3  
2.0  

Transparency
Opaque  
Opaque  

Density
2.73 g/cm3  
-9999 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.92 kJ/Kg K  
10
0.24 kJ/Kg K  
31

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

Reserves

Deposits in Eastern Continents
  
  

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

Africa
Egypt  
Cape Verde, Ethiopia, Ghana, South Africa, Western Africa  

Europe
Finland, Germany, Italy, Romania, Sweden, Turkey  
Albania, France, Germany, Great Britain, United Kingdom  

Others
-  
-  

Deposits in Western Continents
  
  

North America
USA  
Canada, USA  

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

Deposits in Oceania Continent
  
  

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

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Trondhjemite 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 Trondhjemite and Gossan Reserves. Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.. 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 Trondhjemite vs Gossan information and Trondhjemite vs Gossan characteristics in the upcoming sections.

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

More about Trondhjemite and Gossan

Here you can know more about Trondhjemite and Gossan. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Trondhjemite and Gossan consists of mineral content and compound content. The mineral content of Trondhjemite includes Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon 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 Trondhjemite vs Gossan, the texture, color and appearance plays an important role in determining the type of rock. Trondhjemite is available in black, brown, light to dark grey, white colors whereas, Gossan is available in brown, brown- black, gold, green, rust colors. Appearance of Trondhjemite is Banded and Foilated and that of Gossan is Dull and Banded. Properties of rock is another aspect for Trondhjemite vs Gossan. The hardness of Trondhjemite is 6-7 and that of Gossan is 4-5. The types of Trondhjemite are Intermediate intrusive rock 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 Trondhjemite is bluish black while that of Gossan is white to grey. The specific heat capacity of Trondhjemite is 0.92 kJ/Kg K 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.Trondhjemite is heat resistant, pressure resistant, wear resistant whereas Gossan is heat resistant, impact resistant, pressure resistant.

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