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Dunite Rock

Rocks with Medium Hardness

Marble
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Limestone
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Basalt
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Dunite Definition

Definition
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine

History of Dunite

Origin
New Zealand
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Discoverer
Ferdinand von Hochstetter

Etymology
From the name of Dun Mountain, New Zealand, + -ite1

Class
Igneous Rocks
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Sub-Class
Durable Rock, Medium Hardness Rock
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Dunite Family

Group
Plutonic

Other Categories
Coarse Grained Rock, Opaque Rock

Dunite Texture

Texture
Phaneritic
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Dunite Color
Dark Greenish - Grey

Maintenance
Less
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Durability
Durable

Water Resistant
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Scratch Resistant
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Stain Resistant
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Wind Resistant
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Acid Resistant
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Appearance
Rough and Shiny
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Dunite Uses

Architecture

Interior Uses
Decorative Aggregates, Interior Decoration
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Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
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Other Architectural Uses
Curbing

Industry

Construction Industry
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar

Medical Industry
Not Yet Used

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

Commercial Uses
Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds
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Dunite Types

Types
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
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Archaeological Significance of Dunite

Monuments
Used

Famous Monuments
Data Not Available

Sculpture
Used

Famous Sculptures
Data Not Available

Pictographs
Used

Petroglyphs
Used

Figurines
Used

Fossils
Absent

Formation of Dunite

Formation
Dunite is a plutonic ultramafic igneous rock consisting almost m olivine. It can be formed in two ways.

Composition

Mineral Content
Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene
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Compound Content
Ca, CaO, Fe, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide
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Transformation

Metamorphism

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion
Coastal Erosion, Glacier Erosion, Water Erosion

Properties of Dunite

Physical Properties of Dunite

Hardness
3.5-4

Grain Size
Coarse Grained
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Fracture
Irregular
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Streak
White
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Porosity
Less Porous
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Luster
Shiny
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Compressive Strength
107.55 N/mm2
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Cleavage
Imperfect
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Toughness
2.1

Specific Gravity
3-3.01

Transparency
Translucent to Opaque
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Density
2.84-2.85 g/cm3

Thermal Properties of Dunite

Specific Heat Capacity
1.25 kJ/Kg K
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Resistance
Heat Resistant, Pressure Resistant, Wear Resistant
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Dunite Reserves

Dunite Deposits in Eastern Continents

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

Africa
Morocco, South Africa

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

Others
Not Yet Found

Dunite Deposits in Western Continents

North America
Canada, USA

South America
Argentina, Brazil, Colombia, Ecuador, Venezuela

Dunite Deposits in Oceania Continent

Australia
New Zealand, Western Australia

Information about Dunite

Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Dunite Uses. We have provided you with all information about Dunite rock here. Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine. Dunite is available in dark greenish - grey colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Dunite is white. Get to know more about Dunite rock and characteristics of Dunite rock in the next sections.

Characteristics of Dunite

Many rocks have distinct characteristics. Some of the Properties of Dunite are hardness, structure, streak, fracture etc. Dunite is significant as it is composed of minerals and has variety of uses in our day to day life. The characteristics of Dunite plays an important role in its identification. The hardness of Dunite is 3.5-4 on Moh’s hardness scale. Rocks according to their hardness are divided into:Hard Rocks, Soft Rocks and Rocks with Medium Hardness. Fracture of Dunite rock is irregular. Its specific heat capacity is 1.25 kJ/Kg K. Dunite is heat resistant, pressure resistant, wear resistant. Some of its uses are:

  • Interior Uses: Decorative aggregates and Interior decoration.
  • Construction Industry: As dimension stone, Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar.

Know more about Dunite rock in the next section.

More About Dunite

Dunite is a type of Igneous Rocks. The color of rock is one of its important property. Dunite rock is available in dark greenish - grey colors. It is Rough and Shiny in appearance. The Dunite mineral content includes Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene. Its compound content includes Ca, CaO, Fe, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide. Let’s move on to the types of Dunite. Dunite rock does not have any types. Fossils are the remains of prehistoric plants or animals which are embedded in rock and preserved in petrified form. Fossils are found only in sedimentary rocks. As Dunite belongs to Igneous Rocks, fossils are not found in it.