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Cataclasite and Trondhjemite


Trondhjemite and Cataclasite


Definition

Definition
Cataclasite is a type of cataclastic rock that is formed by fracturing and comminution during faulting. It is normally cohesive and non-foliated, consisting of angular clasts in a finer-grained matrix   
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.   

History
  
  

Origin
Swiss Alps, Europe   
Tonale, Italy   

Discoverer
Michael Tellinger   
Unknown   

Etymology
From the Italian word cataclasi   
Not Available   

Class
Metamorphic Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture

Texture
Clastic   
Phaneritic   

Color
Brown, Green, White, Yellow   
Black, Brown, Light to Dark Grey, White   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
No   
Yes   

Stain Resistant
No   
Yes   

Wind Resistant
No   
No   

Acid Resistant
No   
No   

Appearance
Dull and Banded   
Banded and Foilated   

Uses

Architecture
  
  

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

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

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts   
Artifacts, Monuments, Sculpture, Small Figurines   

Other Uses
  
  

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

Types

Types
Protocataclasite, Mesocataclasite, Ultracataclasite and Foliated cataclasite   
Not Available   

Features
Easily splits into thin plates, Is one of the oldest rock   
Is one of the oldest rock, Typically speckled black and white.   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Not Yet Used   

Famous Monuments
Not Applicable   
Not Applicable   

Sculpture
Not Yet Used   
Used   

Famous Sculptures
Not Applicable   
Data Not Available   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Not Yet Used   
Used   

Fossils
Absent   
Absent   

Formation

Formation
Cataclasiste rocks mainly form by pressure deep under the Earth's surface, from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.   
When alkali feldspar is extracted from granite, it changes to granitoid and later, it becomes trondhjemite with quartz as major mineral.   

Composition
  
  

Mineral Content
Albite, Apatite, Augite, Biotite, Calcite, Enstatite, Epidote, Feldspar, Micas, Muscovite or Illite, Pyroxene, Quartz   
Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon   

Compound Content
Silicon Dioxide   
NaCl, CaO, MgO, Silicon Dioxide   

Transformation
  
  

Metamorphism
No   
Yes   

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

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
3-4   
6-7   

Grain Size
Fine Grained   
Medium to Fine Coarse Grained   

Fracture
NA   
Conchoidal   

Streak
Black   
Bluish Black   

Porosity
Less Porous   
Very Less Porous   

Luster
Vitreous   
Subvitreous to Dull   

Cleavage
Not Available   
Not Available   

Toughness
Not Available   
2.1   

Specific Gravity
2.1   
2.86-3   

Transparency
Translucent to Opaque   
Opaque   

Density
2.9-3.1 g/cm3   
2.73 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.92 kJ/Kg K   
10

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

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Russia, Saudi Arabia, South Korea   
Not Yet Found   

Africa
Egypt, Ethiopia, Kenya, Madagascar, Morocco, South Africa   
Egypt   

Europe
England, Finland, France, Spain, United Kingdom   
Finland, Germany, Italy, Romania, Sweden, Turkey   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, USA   
USA   

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

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia   
New Zealand, South Australia, Western Australia   

Summary >>
<< Reserves

All about Cataclasite and Trondhjemite Properties

Know all about Cataclasite and Trondhjemite properties here. All properties of rocks are important as they define the type of rock and its application. Cataclasite belongs to Metamorphic Rocks while Trondhjemite belongs to Igneous Rocks.Texture of Cataclasite is Clastic whereas that of Trondhjemite is Phaneritic. Cataclasite appears Dull and Banded and Trondhjemite appears Banded and Foilated. The luster of Cataclasite is vitreous while that of Trondhjemite is subvitreous to dull. Cataclasite is available in brown, green, white, yellow colors whereas Trondhjemite is available in black, brown, light to dark grey, white colors. The commercial uses of Cataclasite are commemorative tablets, creating artwork and that of Trondhjemite are cemetery markers, creating artwork.

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