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Dunite vs Ignimbrite


Ignimbrite vs Dunite


Definition

Definition
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine   
Ignimbrite is a volcanic rock consisting mainly of pumice fragments, formed by the consolidation of material deposited by pyroclastic flows   

History
  
  

Origin
New Zealand   
New Zealand   

Discoverer
Ferdinand von Hochstetter   
Patrick Marshall   

Etymology
From the name of Dun Mountain, New Zealand, + -ite1   
From Latin ignis fire + imber, imbr- shower of rain, storm cloud + -ite   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Plutonic   
Volcanic   

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

Texture

Texture
Phaneritic   
Aphanitic   

Color
Dark Greenish - Grey   
Beige, Black, Brown, Grey, Pink, White   

Maintenance
Less   
More   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
No   

Wind Resistant
No   
Yes   

Acid Resistant
No   
No   

Appearance
Rough and Shiny   
Dull, Vesicular and Foilated   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Interior Decoration   
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration   

Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone   
As Building Stone, Garden Decoration, Office Buildings, 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   
Building houses or walls, Construction Aggregate   

Medical Industry
Not Yet Used   
Not Yet Used   

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

Other Uses
  
  

Commercial Uses
Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds   
Cemetery Markers, Commemorative Tablets, Creating Artwork   

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   
Always found as volcanic pipes over deep continental crust   

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   
Absent   

Formation

Formation
Dunite is a plutonic ultramafic igneous rock consisting almost m olivine. It can be formed in two ways.   
Ignimbrites are formed from very poorly sorted mixture of volcanic ash or tuff and pumice lapilli, commonly with scattered lithic fragments.   

Composition
  
  

Mineral Content
Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene   
Apatite, Biotite, Calcite, Chlorite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz   

Compound Content
Ca, CaO, Fe, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide   
Ca, NaCl   

Transformation
  
  

Metamorphism
Yes   
Yes   

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

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
3.5-4   
4-6   

Grain Size
Coarse Grained   
Fine Grained   

Fracture
Irregular   
Uneven   

Streak
White   
White   

Porosity
Less Porous   
Highly Porous   

Luster
Shiny   
Vitreous to Dull   

Compressive Strength
107.55 N/mm2   
19
243.80 N/mm2   
5

Cleavage
Imperfect   
Not Available   

Toughness
2.1   
Not Available   

Specific Gravity
3-3.01   
2.73   

Transparency
Translucent to Opaque   
Opaque   

Density
2.84-2.85 g/cm3   
1-1.8 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
1.25 kJ/Kg K   
6
0.20 kJ/Kg K   
25

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

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Indonesia, Kazakhstan, Russia, South Korea, Thailand, Turkey   
Afghanistan, Armenia, Azerbaijan, Burma, Cambodia, China, India, Indonesia, Iran, Japan, Malaysia, Mongolia, Nepal, North Korea, Pakistan, Saudi Arabia, Syria, Taiwan, Thailand, Turkey, Vietnam, Yemen   

Africa
Morocco, South Africa   
Cameroon, Cape Verde, Chad, Djibouti, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Tanzania, Uganda   

Europe
Finland, France, Georgia, Germany, Great Britain, Italy, Kazakhstan, Netherlands, Norway, Spain, Switzerland, Venezuela   
France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom   

Others
Not Yet Found   
Antarctica, Hawaii Islands   

Deposits in Western Continents
  
  

North America
Canada, USA   
Canada, Costa Rica, Panama, USA   

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

Deposits in Oceania Continent
  
  

Australia
New Zealand, Western Australia   
Central Australia, Western Australia   

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Dunite vs Ignimbrite 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 Ignimbrite Reserves. Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine. Ignimbrite is a volcanic rock consisting mainly of pumice fragments, formed by the consolidation of material deposited by pyroclastic flows. 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 Ignimbrite information and Dunite vs Ignimbrite characteristics in the upcoming sections.

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Dunite vs Ignimbrite 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 Ignimbrite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Dunite and Properties of Ignimbrite. Learn more about Dunite vs Ignimbrite in the next section. The interior uses of Dunite include Decorative aggregates and Interior decoration whereas the interior uses of Ignimbrite include Decorative aggregates, Floor tiles, Homes and Interior decoration. Due to some exceptional properties of Dunite and Ignimbrite, 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 Ignimbrite include Building houses or walls, Construction aggregate.

More about Dunite and Ignimbrite

Here you can know more about Dunite and Ignimbrite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Dunite and Ignimbrite 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 Ignimbrite includes Apatite, Biotite, Calcite, Chlorite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz. You can also check out the list of all Igneous Rocks. When we have to compare Dunite vs Ignimbrite, the texture, color and appearance plays an important role in determining the type of rock. Dunite is available in dark greenish - grey colors whereas, Ignimbrite is available in beige, black, brown, grey, pink, white colors. Appearance of Dunite is Rough and Shiny and that of Ignimbrite is Dull, Vesicular and Foilated. Properties of rock is another aspect for Dunite vs Ignimbrite. The hardness of Dunite is 3.5-4 and that of Ignimbrite is 4-6. The types of Dunite are Not Available whereas types of Ignimbrite are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Dunite and Ignimbrite is white. The specific heat capacity of Dunite is 1.25 kJ/Kg K and that of Ignimbrite is 0.20 kJ/Kg K. 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 Ignimbrite is heat resistant, impact resistant, pressure resistant, wear resistant.

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