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Rapakivi Granite vs Novaculite


Novaculite vs Rapakivi Granite


Definition

Definition
Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase   
Novaculite is a dense, hard, fine-grained, siliceous metamorpic rock which is a type of chert that breaks with conchoidal fracture   

History
  
  

Origin
Finland, Europe   
Unknown   

Discoverer
Jakob Sederholm   
Unknown   

Etymology
From Finnish Rapakivi which stands for crumbly rock   
From Latin word novacula, for razor stone   

Class
Igneous Rocks   
Sedimentary Rocks   

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

Family
  
  

Group
Plutonic   
Not Applicable   

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

Texture

Texture
Granular, Phaneritic   
Banded, Glassy, Rough, Vitreous   

Color
Black, Grey, Orange, Pink, White   
Black, Brown, Green, Grey, Red, White   

Maintenance
More   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
Yes   

Wind Resistant
No   
Yes   

Acid Resistant
Yes   
Yes   

Appearance
Veined or Pebbled   
Glassy or Pearly   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Not Yet Used   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone   
Arrowheads, Building houses or walls, Cement Manufacture, Construction Aggregate, Cutting Tool, for Road Aggregate, Knives, Landscaping, Making natural cement, Production of Glass and Ceramics, Rail Track Ballast, Roadstone, Spear Points, Used to sharpen metal tools and weapons   

Medical Industry
Not Yet Used   
Not Yet Used   

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

Other Uses
  
  

Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling, Laboratory bench tops, Tombstones   
Cemetery Markers, Gemstone, In aquifers, In fire-starting tools, Jewelry, Manufacture of tools, Pebbles are used in ball mills to grind in ceramics industry, To determine the gold content of jewelry   

Types

Types
Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite   
Not Available   

Features
Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock   
Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate   

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Used   
Not Yet Used   

Famous Sculptures
Data Not Available   
Not Applicable   

Pictographs
Not Used   
Not Used   

Petroglyphs
Not Used   
Not Used   

Figurines
Used   
Not Yet Used   

Fossils
Absent   
Present   

Formation

Formation
Granite is an igneous rock which is very hard, crystalline and is visibly homogeneous in texture and forms by melting of continental rocks   
Novaculite forms when microcrystals of silicon dioxide grow within soft sediments that become limestone or chalk. The formation of Novaculite can be either of chemical or biological origin.   

Composition
  
  

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

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

Transformation
  
  

Metamorphism
Yes   
No   

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

Weathering
Yes   
No   

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering   
Not Applicable   

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
6-7   
7   

Grain Size
Large and Coarse Grained   
Fine Grained   

Fracture
Not Available   
Conchoidal   

Streak
White   
Colorless   

Porosity
Less Porous   
Less Porous   

Luster
Dull to Grainy with Sporadic parts Pearly and Vitreous   
Waxy and Dull   

Compressive Strength
175.00 N/mm2   
13
450.00 N/mm2   
1

Cleavage
Not Available   
Non-Existent   

Toughness
Not Available   
1.5   

Specific Gravity
2.6-2.7   
2.5-2.7   

Transparency
Opaque   
Translucent to Opaque   

Density
2.6-2.8 g/cm3   
2.7 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.79 kJ/Kg K   
16
0.74 kJ/Kg K   
19

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

Reserves

Deposits in Eastern Continents
  
  

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

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

Europe
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela   
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom   

Others
Not Yet Found   
Greenland, Mid-Atlantic Ridge   

Deposits in Western Continents
  
  

North America
Canada, USA   
Canada, Mexico, USA   

South America
Not Yet Found   
Bolivia, Brazil   

Deposits in Oceania Continent
  
  

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

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Rapakivi Granite vs Novaculite 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 Rapakivi Granite and Novaculite Reserves. Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. Novaculite is a dense, hard, fine-grained, siliceous metamorpic rock which is a type of chert that breaks with conchoidal fracture. 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 Rapakivi Granite vs Novaculite information and Rapakivi Granite vs Novaculite characteristics in the upcoming sections.

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Rapakivi Granite vs Novaculite 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. Rapakivi Granite vs Novaculite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Rapakivi Granite and Properties of Novaculite. Learn more about Rapakivi Granite vs Novaculite in the next section. The interior uses of Rapakivi Granite include Bathrooms, Countertops, Decorative aggregates, Entryways, Floor tiles, Flooring, Homes, Hotels, Interior decoration, Kitchens and Stair treads whereas the interior uses of Novaculite include Countertops, Decorative aggregates, Flooring and Interior decoration. Due to some exceptional properties of Rapakivi Granite and Novaculite, they have various applications in construction industry. The uses of Rapakivi Granite in construction industry include As dimension stone and that of Novaculite include Arrowheads, Building houses or walls, Cement manufacture, Construction aggregate, Cutting tool, For road aggregate, Knives, Landscaping, Making natural cement, Production of glass and ceramics, Rail track ballast, Roadstone, Spear points, Used to sharpen metal tools and weapons.

More about Rapakivi Granite and Novaculite

Here you can know more about Rapakivi Granite and Novaculite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Rapakivi Granite and Novaculite consists of mineral content and compound content. The mineral content of Rapakivi Granite includes Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz and mineral content of Novaculite includes Quartz, Silicon. You can also check out the list of all Igneous Rocks. When we have to compare Rapakivi Granite vs Novaculite, the texture, color and appearance plays an important role in determining the type of rock. Rapakivi Granite is available in black, grey, orange, pink, white colors whereas, Novaculite is available in black, brown, green, grey, red, white colors. Appearance of Rapakivi Granite is Veined or Pebbled and that of Novaculite is Glassy or Pearly. Properties of rock is another aspect for Rapakivi Granite vs Novaculite. The hardness of Rapakivi Granite is 6-7 and that of Novaculite is 7. The types of Rapakivi Granite are Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite whereas types of Novaculite are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Rapakivi Granite is white while that of Novaculite is colorless. The specific heat capacity of Rapakivi Granite is 0.79 kJ/Kg K and that of Novaculite is 0.74 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Rapakivi Granite is heat resistant, wear resistant whereas Novaculite is heat resistant, impact resistant, pressure resistant, wear resistant.

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