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Charnockite vs Rapakivi Granite


Rapakivi Granite vs Charnockite


Definition

Definition
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar  
Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase  

History
  
  

Origin
Tamil Nadu, India  
Finland, Europe  

Discoverer
T. H. Holland  
Jakob Sederholm  

Etymology
From Job Charnock, an administtrator of East India Company  
From Finnish Rapakivi which stands for crumbly rock  

Class
Igneous Rocks  
Igneous Rocks  

Sub-Class
Durable Rock, Hard Rock  
Durable Rock, Hard Rock  

Family
  
  

Group
Plutonic  
Plutonic  

Other Categories
Coarse Grained Rock, Opaque Rock  
Coarse Grained Rock, Opaque Rock  

Texture

Texture
Granular  
Granular, Phaneritic  

Color
Black, Grey, Orange, Pink, White  
Black, Grey, Orange, Pink, White  

Maintenance
Less  
More  

Durability
Durable  
Durable  

Water Resistant
No  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
Yes  
Yes  

Wind Resistant
No  
No  

Acid Resistant
Yes  
Yes  

Appearance
Veined or Pebbled  
Veined or Pebbled  

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing  
-  

Industry
  
  

Construction Industry
As Dimension Stone  
As Dimension Stone  

Medical Industry
-  
-  

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

Other Uses
  
  

Commercial Uses
Curling, Gemstone, Laboratory bench tops, Tombstones  
Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling, Laboratory bench tops, Tombstones  

Types

Types
Enderbite  
Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite  

Features
Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock  
Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Charnockite is an intrusive igneous rock which is very hard and is formed due to weathering of existing rocks.  
Granite is an igneous rock which is very hard, crystalline and is visibly homogeneous in texture and forms by melting of continental rocks  

Composition
  
  

Mineral Content
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Olivine, Plagioclase, Pyroxene, Quartz  
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz  

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

Transformation
  
  

Metamorphism
Yes  
Yes  

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

Weathering
Yes  
Yes  

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

Erosion
Yes  
Yes  

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

Properties

Physical Properties
  
  

Hardness
6-7  
6-7  

Grain Size
Coarse Grained  
Large and Coarse Grained  

Fracture
-  
-  

Streak
White  
White  

Porosity
Very Less Porous  
Less Porous  

Luster
-  
Dull to Grainy with Sporadic parts Pearly and Vitreous  

Compressive Strength
190.00 N/mm2  
15
175.00 N/mm2  
20

Cleavage
-  
-  

Toughness
-  
-  

Specific Gravity
-9999  
2.6-2.7  

Transparency
Opaque  
Opaque  

Density
2.6 g/cm3  
2.6-2.8 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.84 kJ/Kg K  
15
0.79 kJ/Kg K  
17

Resistance
Heat Resistant, Wear Resistant  
Heat Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

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

Africa
East Africa, Ethiopia, Madagascar, Morocco, Mozambique  
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa  

Europe
Albania, Romania, Scotland, United Kingdom  
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic  

Others
-  
-  

Deposits in Western Continents
  
  

North America
USA  
Canada, USA  

South America
Brazil, Colombia, Venezuela  
-  

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia  
-  

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Charnockite vs Rapakivi Granite 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 Charnockite and Rapakivi Granite Reserves. Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar. Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. 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 Charnockite vs Rapakivi Granite information and Charnockite vs Rapakivi Granite characteristics in the upcoming sections.

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Charnockite vs Rapakivi Granite 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. Charnockite vs Rapakivi Granite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Charnockite and Properties of Rapakivi Granite. Learn more about Charnockite vs Rapakivi Granite in the next section. The interior uses of Charnockite include Bathrooms, Countertops, Decorative aggregates, Entryways, Floor tiles, Homes, Hotels, Kitchens and Stair treads whereas the interior uses of Rapakivi Granite include Bathrooms, Countertops, Decorative aggregates, Entryways, Floor tiles, Flooring, Homes, Hotels, Interior decoration, Kitchens and Stair treads. Due to some exceptional properties of Charnockite and Rapakivi Granite, they have various applications in construction industry. The uses of Charnockite in construction industry include As dimension stone and that of Rapakivi Granite include As dimension stone.

More about Charnockite and Rapakivi Granite

Here you can know more about Charnockite and Rapakivi Granite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Charnockite and Rapakivi Granite consists of mineral content and compound content. The mineral content of Charnockite includes Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Olivine, Plagioclase, Pyroxene, Quartz and mineral content of Rapakivi Granite includes Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz. You can also check out the list of all Igneous Rocks. When we have to compare Charnockite vs Rapakivi Granite, the texture, color and appearance plays an important role in determining the type of rock. Charnockite is available in black, grey, orange, pink, white colors whereas, Rapakivi Granite is available in black, grey, orange, pink, white colors. Appearance of Charnockite is Veined or Pebbled and that of Rapakivi Granite is Veined or Pebbled. Properties of rock is another aspect for Charnockite vs Rapakivi Granite. Hardness of Charnockite and Rapakivi Granite is 6-7. The types of Charnockite are Enderbite whereas types of Rapakivi Granite are Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Charnockite and Rapakivi Granite is white. The specific heat capacity of Charnockite is 0.84 kJ/Kg K and that of Rapakivi Granite is 0.79 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Charnockite is heat resistant, wear resistant whereas Rapakivi Granite is heat resistant, wear resistant.

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