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Trachyte vs Rapakivi Granite


Rapakivi Granite vs Trachyte


Definition

Definition
Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar  
Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase  

History
  
  

Origin
-  
Finland, Europe  

Discoverer
Alexandre Brongniart and René Just Haüy  
Jakob Sederholm  

Etymology
From Greek trakhus rough’ or trakhutēs roughness  
From Finnish Rapakivi which stands for crumbly rock  

Class
Igneous Rocks  
Igneous Rocks  

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

Family
  
  

Group
Volcanic  
Plutonic  

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

Texture

Texture
Aphanitic to Porphyritic  
Granular, Phaneritic  

Color
Black, Brown, Dark Greenish - Grey, Green, Grey, Light to Dark Grey, White  
Black, Grey, Orange, Pink, White  

Maintenance
Less  
More  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
Yes  
Yes  

Wind Resistant
Yes  
No  

Acid Resistant
No  
Yes  

Appearance
Banded  
Veined or Pebbled  

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing  
-  

Industry
  
  

Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories  
As Dimension Stone  

Medical Industry
-  
-  

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

Other Uses
  
  

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

Types

Types
Felsic volcanic rock  
Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite  

Features
Available in Lots of Colors and Patterns, Is one of the oldest rock, Matrix variable  
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
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.  
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
Augite, Biotite, Feldspar, Hornblade, Plagioclase, Quartz  
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz  

Compound Content
Potassium Oxide, Sodium Oxide, Silicon 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
Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism  
Burial Metamorphism, Cataclastic Metamorphism, Contact 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
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion  
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion  

Properties

Physical Properties
  
  

Hardness
6  
6-7  

Grain Size
Fine Grained  
Large and Coarse Grained  

Fracture
-  
-  

Streak
White  
White  

Porosity
Less Porous  
Less Porous  

Luster
Metallic  
Dull to Grainy with Sporadic parts Pearly and Vitreous  

Compressive Strength
150.00 N/mm2  
22
175.00 N/mm2  
20

Cleavage
-  
-  

Toughness
-  
-  

Specific Gravity
2.7  
2.6-2.7  

Transparency
Opaque  
Opaque  

Density
2.43-2.45 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, Impact Resistant, Wear Resistant  
Heat Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

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

Africa
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa  
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa  

Europe
Bulgaria, England, Germany, Norway, Romania, Switzerland  
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, Chile  
-  

Deposits in Oceania Continent
  
  

Australia
New Zealand, Queensland, South Australia, Western Australia  
-  

Definition >>
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Trachyte 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 Trachyte and Rapakivi Granite Reserves. Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali 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 Trachyte vs Rapakivi Granite information and Trachyte vs Rapakivi Granite characteristics in the upcoming sections.

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Trachyte 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. Trachyte vs Rapakivi Granite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Trachyte and Properties of Rapakivi Granite. Learn more about Trachyte vs Rapakivi Granite in the next section. The interior uses of Trachyte include Decorative aggregates, Flooring, Homes and Interior decoration 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 Trachyte and Rapakivi Granite, they have various applications in construction industry. The uses of Trachyte in construction industry include As dimension stone, Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate, Landscaping, Making natural cement, Manufacture of magnesium and dolomite refractories and that of Rapakivi Granite include As dimension stone.

More about Trachyte and Rapakivi Granite

Here you can know more about Trachyte and Rapakivi Granite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Trachyte and Rapakivi Granite consists of mineral content and compound content. The mineral content of Trachyte includes Augite, Biotite, Feldspar, Hornblade, Plagioclase, 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 Trachyte vs Rapakivi Granite, the texture, color and appearance plays an important role in determining the type of rock. Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors whereas, Rapakivi Granite is available in black, grey, orange, pink, white colors. Appearance of Trachyte is Banded and that of Rapakivi Granite is Veined or Pebbled. Properties of rock is another aspect for Trachyte vs Rapakivi Granite. The hardness of Trachyte is 6 and that of Rapakivi Granite is 6-7. The types of Trachyte are Felsic volcanic rock 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 Trachyte and Rapakivi Granite is white. The specific heat capacity of Trachyte 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.Trachyte is heat resistant, impact resistant, wear resistant whereas Rapakivi Granite is heat resistant, wear resistant.

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