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Dunite vs Websterite


Websterite vs Dunite


Definition

Definition
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine   
Websterite is ultramafic and ultrabasic rock that consists of roughly equal proportions of orthopyroxene and clinopyroxene. It is a special type of pyroxenite.   

History
  
  

Origin
New Zealand   
Webster, North Carolina   

Discoverer
Ferdinand von Hochstetter   
Unknown   

Etymology
From the name of Dun Mountain, New Zealand, + -ite1   
From the town of Webster located in North Carolina   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Plutonic   
Plutonic   

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

Texture

Texture
Phaneritic   
Clastic, Granular, Phaneritic, Porphyritic   

Color
Dark Greenish - Grey   
Black to Grey, Bluish - Grey, Dark Greenish - Grey, Green, Light Greenish Grey   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
Yes   

Wind Resistant
No   
Yes   

Acid Resistant
No   
Yes   

Appearance
Rough and Shiny   
Layered, Banded, Veined and Shiny   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, 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   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines   
Artifacts   

Other Uses
  
  

Commercial Uses
Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds   
Cemetery Markers, Commemorative Tablets, Creating Artwork, Laboratory bench tops, Jewelry, Sea Defence, Tombstones   

Types

Types
Not Available   
Not Available   

Features
Constitutes upper part of the Earth's mantle, Generally rough to touch, Host rock for Diamond, Is one of the oldest rock   
Generally rough to touch, Is one of the oldest rock   

Archaeological Significance
  
  

Monuments
Used   
Not Yet Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Used   
Not Yet Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Used   
Not Yet Used   

Fossils
Absent   
Absent   

Formation

Formation
Dunite is a plutonic ultramafic igneous rock consisting almost m olivine. It can be formed in two ways.   
Websterite can be formed as cumulates in ultramafic intrusions by accumulation of pyroxene crystals at the base of the lava chamber.   

Composition
  
  

Mineral Content
Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene   
Amphibole, Augite, Bronzite, Chromite, Diopside, Enstatite, Garnet, Hornblende, Hypersthene, Magnetite, Pyroxene   

Compound Content
Ca, CaO, Fe, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide   
Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide   

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism   
Burial Metamorphism, Impact 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, Glacier Erosion, Water Erosion   
Chemical Erosion, Coastal Erosion, Glacier Erosion, Water Erosion, Wind Erosion   

Properties

Physical Properties
  
  

Hardness
3.5-4   
7   

Grain Size
Coarse Grained   
Coarse Grained   

Fracture
Irregular   
Uneven   

Streak
White   
White, Greenish White or Grey   

Porosity
Less Porous   
Less Porous   

Luster
Shiny   
Dull to Vitreous to Submetallic   

Compressive Strength
107.55 N/mm2   
19
Not Available   

Cleavage
Imperfect   
Irregular   

Toughness
2.1   
Not Available   

Specific Gravity
3-3.01   
3.2-3.5   

Transparency
Translucent to Opaque   
Opaque   

Density
2.84-2.85 g/cm3   
3.1-3.6 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
1.25 kJ/Kg K   
6
Not Available   

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

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Indonesia, Kazakhstan, Russia, South Korea, Thailand, Turkey   
India, Russia   

Africa
Morocco, South Africa   
South Africa   

Europe
Finland, France, Georgia, Germany, Great Britain, Italy, Kazakhstan, Netherlands, Norway, Spain, Switzerland, Venezuela   
Germany, Greece, Italy, Scotland, Turkey   

Others
Not Yet Found   
Greenland   

Deposits in Western Continents
  
  

North America
Canada, USA   
Canada, USA   

South America
Argentina, Brazil, Colombia, Ecuador, Venezuela   
Brazil, Colombia, Venezuela   

Deposits in Oceania Continent
  
  

Australia
New Zealand, Western Australia   
New Zealand, Queensland   

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Dunite vs Websterite 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 Dunite and Websterite Reserves. Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine. Websterite is ultramafic and ultrabasic rock that consists of roughly equal proportions of orthopyroxene and clinopyroxene. It is a special type of pyroxenite.. 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 Dunite vs Websterite information and Dunite vs Websterite characteristics in the upcoming sections.

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Dunite vs Websterite 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. Dunite vs Websterite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Dunite and Properties of Websterite. Learn more about Dunite vs Websterite in the next section. The interior uses of Dunite include Decorative aggregates and Interior decoration whereas the interior uses of Websterite include Countertops, Decorative aggregates, Entryways, Floor tiles, Flooring and Interior decoration. Due to some exceptional properties of Dunite and Websterite, they have various applications in construction industry. The uses of Dunite in construction industry include As dimension stone, Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar and that of Websterite include As dimension stone, Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate.

More about Dunite and Websterite

Here you can know more about Dunite and Websterite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Dunite and Websterite consists of mineral content and compound content. The mineral content of Dunite includes Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene and mineral content of Websterite includes Amphibole, Augite, Bronzite, Chromite, Diopside, Enstatite, Garnet, Hornblende, Hypersthene, Magnetite, Pyroxene. You can also check out the list of all Igneous Rocks. When we have to compare Dunite vs Websterite, the texture, color and appearance plays an important role in determining the type of rock. Dunite is available in dark greenish - grey colors whereas, Websterite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey colors. Appearance of Dunite is Rough and Shiny and that of Websterite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Dunite vs Websterite. The hardness of Dunite is 3.5-4 and that of Websterite is 7. The types of Dunite are Not Available whereas types of Websterite are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Dunite is white while that of Websterite is white, greenish white or grey. The specific heat capacity of Dunite is 1.25 kJ/Kg K and that of Websterite is Not Available. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Dunite is heat resistant, pressure resistant, wear resistant whereas Websterite is impact resistant, pressure resistant, wear resistant.

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