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Rhomb Porphyry and Argillite


Argillite and Rhomb Porphyry


Definition

Definition
Rhomb-porphyry is a porphyritic igneous rock with abundant wedge or lens shaped anorthoclase or feldspar phenocrysts   
Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From Latin term that means purple   
From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite   

Class
Igneous Rocks   
Sedimentary Rocks   

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

Family
  
  

Group
Volcanic   
Not Applicable   

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

Texture

Texture
Aphanitic to Porphyritic   
Clastic, Polished   

Color
Black, Brown, Colourless, Green, Grey, Pink, White   
Dark Grey to Black, Pink, Red, White   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
No   

Scratch Resistant
No   
Yes   

Stain Resistant
Yes   
Yes   

Wind Resistant
Yes   
Yes   

Acid Resistant
No   
Yes   

Appearance
Rough   
Rough and Dull   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Homes, Interior Decoration   
Decorative Aggregates, Homes, Interior Decoration   

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

Other Architectural Uses
Curbing   
Curbing, Whetstones   

Industry
  
  

Construction Industry
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories   
Used for flooring, stair treads, borders and window sills.   

Medical Industry
Not Yet Used   
Not Yet Used   

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

Other Uses
  
  

Commercial Uses
An Oil and Gas Reservoir, As a Feed Additive for Livestock, Metallurgical Flux, Soil Conditioner, Source of Magnesia (MgO)   
Fire resistant, Used to manufracture paperweights and bookends   

Types

Types
Not Available   
Not Available   

Features
Host Rock for Lead   
Is one of the oldest rock   

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Used   
Used   

Fossils
Absent   
Present   

Formation

Formation
Rhomb-porphyry is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.   
An argillite is a fine-grained sedimentary rock mainly composed of clay particles which forms from lithified muds which contain variable amounts of silt-sized particles.   

Composition
  
  

Mineral Content
Alkali feldspar, Biotite, Plagioclase, Pyroxene   
Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz   

Compound Content
CaO, Cl, MgO   
Iron(III) Oxide, Potassium Oxide, MgO, Silicon Dioxide   

Transformation
  
  

Metamorphism
Yes   
No   

Types of Metamorphism
Impact Metamorphism   
Not Applicable   

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
5-5.5   
2-3   

Grain Size
Fine Grained   
Fine Grained   

Fracture
Conchoidal   
Conchoidal to Uneven   

Streak
White   
White to Grey   

Porosity
Very Less Porous   
Highly Porous   

Luster
Subvitreous to Dull   
Waxy and Dull   

Compressive Strength
310.00 N/mm2   
2
Not Available   

Cleavage
Perfect   
Slaty   

Toughness
2.7   
2.6   

Specific Gravity
2.86   
2.56-2.68   

Transparency
Translucent   
Opaque   

Density
2.8-2.9 g/cm3   
2.54-2.66 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.92 kJ/Kg K   
10
0.87 kJ/Kg K   
14

Resistance
Heat Resistant, Pressure Resistant   
Heat Resistant, Impact Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
Not Yet Found   
Bangladesh, China, India, Russia   

Africa
Not Yet Found   
Ethiopia, Kenya, Morocco, South Africa, Tanzania   

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

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
USA   
USA   

South America
Not Yet Found   
Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela   

Deposits in Oceania Continent
  
  

Australia
Not Yet Found   
New South Wales, New Zealand, Queensland, Victoria, Western Australia   

Summary >>
<< Reserves

All about Rhomb Porphyry and Argillite Properties

Know all about Rhomb Porphyry and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Rhomb Porphyry belongs to Igneous Rocks while Argillite belongs to Sedimentary Rocks.Texture of Rhomb Porphyry is Aphanitic to Porphyritic whereas that of Argillite is Clastic, Polished. Rhomb Porphyry appears Rough and Argillite appears Rough and Dull. The luster of Rhomb Porphyry is subvitreous to dull while that of Argillite is waxy and dull. Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors whereas Argillite is available in dark grey to black, pink, red, white colors. The commercial uses of Rhomb Porphyry are an oil and gas reservoir, as a feed additive for livestock, metallurgical flux, soil conditioner, source of magnesia (mgo) and that of Argillite are fire resistant, used to manufracture paperweights and bookends.

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