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Claystone and Trachyte


Trachyte and Claystone


Definition

Definition
Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay   
Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar   

History
  
  

Discoverer
Unknown   
Alexandre Brongniart and René Just Haüy   

Etymology
From English clay and stone as the rock contains more amount of clay   
From Greek trakhus rough’ or trakhutēs roughness   

Class
Sedimentary Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Volcanic   

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

Texture

Texture
Clastic   
Aphanitic to Porphyritic   

Color
Black, Blue, Brown, Green, Grey, Orange, Red, White, Yellow   
Black, Brown, Dark Greenish - Grey, Green, Grey, Light to Dark Grey, White   

Maintenance
More   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
No   
Yes   

Wind Resistant
No   
Yes   

Acid Resistant
No   
No   

Appearance
Rough and Dull   
Banded   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
As a Sintering Agent in Steel Industry to process Iron Ore, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar   
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Sculpture, Small Figurines   
Artifacts, Monuments, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Pottery   
Cemetery Markers, Creating Artwork   

Types

Types
Not Available   
Not Available   

Features
Available in Lots of Colors and Patterns, Smooth to touch, Very fine grained rock   
Available in Lots of Colors and Patterns, Is one of the oldest rock, Matrix variable   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Used   

Famous Monuments
Not Applicable   
Data Not Available   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Used   
Used   

Fossils
Present   
Absent   

Formation

Formation
Claystone is generally quite soft, but can be hard and brittle. It forms due to weathering of mudstone.   
Trachyte is an igneous volcanic rock with an aphanitic to porphyritic texture. It is the volcanic equivalent of syenite rock and forms as a result of magmatic differentiation.   

Composition
  
  

Mineral Content
Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz   
Augite, Biotite, Feldspar, Hornblade, Plagioclase, Quartz   

Compound Content
Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, MgO, Silicon Dioxide   
Potassium Oxide, Sodium Oxide, Silicon Dioxide   

Transformation
  
  

Metamorphism
No   
Yes   

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

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
3.5-4   
6   

Grain Size
Fine Grained   
Fine Grained   

Fracture
Not Available   
Not Available   

Streak
White   
White   

Porosity
Very Less Porous   
Less Porous   

Luster
Dull   
Metallic   

Compressive Strength
Not Available   
150.00 N/mm2   
14

Cleavage
Perfect   
Not Available   

Toughness
2.6   
Not Available   

Specific Gravity
0   
2.7   

Transparency
Opaque   
Opaque   

Density
2-2.9 g/cm3   
2.43-2.45 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.92 kJ/Kg K   
10
Not Available   

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Bangladesh, China, India, Russia   
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam   

Africa
Ethiopia, Kenya, Morocco, South Africa, Tanzania   
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa   

Europe
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland   
Bulgaria, England, Germany, Norway, Romania, Switzerland   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, Panama, USA   
USA   

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

Deposits in Oceania Continent
  
  

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

Summary >>
<< Reserves

All about Claystone and Trachyte Properties

Know all about Claystone and Trachyte properties here. All properties of rocks are important as they define the type of rock and its application. Claystone belongs to Sedimentary Rocks while Trachyte belongs to Igneous Rocks.Texture of Claystone is Clastic whereas that of Trachyte is Aphanitic to Porphyritic. Claystone appears Rough and Dull and Trachyte appears Banded. The luster of Claystone is dull while that of Trachyte is metallic. Claystone is available in black, blue, brown, green, grey, orange, red, white, yellow colors whereas Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors. The commercial uses of Claystone are pottery and that of Trachyte are cemetery markers, creating artwork.

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