Dunite

Gossan

Dunite vs Gossan

Dunite

Gossan

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1 Definition

1.1 Definition

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

Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.

1.2 History

1.2.1 Origin

New Zealand

Indonesia

1.2.2 Discoverer

Ferdinand von Hochstetter

Cornish Gossen

1.3 Etymology

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

From Cornish gossen from gos, blood from Old Cornish guit

1.4 Class

Igneous Rocks

Metamorphic Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Plutonic

Not Applicable

1.6 Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Medium Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Phaneritic

Rough, Sandy

2.2 Color

Dark Greenish - Grey

Brown, Brown- Black, Gold, Green, Rust

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Rough and Shiny

Dull and Banded

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Interior Decoration

Countertops, Decorative Aggregates, Interior Decoration

3.1.2 Exterior Uses

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

As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 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, Cement Manufacture, Construction Aggregate, for Road Aggregate

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts

3.4 Other Uses

3.4.1 Commercial Uses

Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds

Cemetery Markers, Commemorative Tablets, Gemstone

4 Types

4.1 Types

Not Available

Translocated gossan and Leakage gossan

4.2 Features

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

Clasts are smooth to touch, Easily splits into thin plates

4.3 Archaeological Significance

4.3.1 Monuments

Used

Not Yet Used

4.3.2 Famous Monuments

Data Not Available

Not Applicable

4.3.3 Sculpture

Used

Not Yet Used

4.3.4 Famous Sculptures

Data Not Available

Not Applicable

4.3.5 Pictographs

Used

4.3.6 Petroglyphs

Used

4.3.7 Figurines

Used

Not Yet Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

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

Earth movements can cause rocks to be either deeply buried or squeezed and hence the rocks are heated and put under great pressure.

5.2 Composition

5.2.1 Mineral Content

Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene

Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon

5.2.2 Compound Content

Ca, CaO, Fe, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide

Aluminium Oxide, CaO, Fe, FeO, Silicon Dioxide, Sulphur

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Not Applicable

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Not Applicable

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Coastal Erosion, Glacier Erosion, Water Erosion

Chemical Erosion, Sea Erosion, Wind Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

3.5-44-5

1 7

6.1.2 Grain Size

Coarse Grained

Fine to Medium Grained

6.1.3 Fracture

Irregular

Conchoidal

6.1.4 Streak

White

White to Grey

6.1.5 Porosity

Less Porous

Highly Porous

6.1.6 Luster

Shiny

Metallic

6.1.7 Compressive Strength

107.55 N/mm²NA

0.15 450

6.1.8 Cleavage

Imperfect

Not Available

6.1.9 Toughness

2.1

Not Available

6.1.10 Specific Gravity

3-3.012.0

0 8.4

6.1.11 Transparency

Translucent to Opaque

Opaque

6.1.12 Density

2.84-2.85 g/cm³Not Available

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

1.25 kJ/Kg K0.24 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

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

China, India, Indonesia, Russia, Singapore, South Korea

7.1.2 Africa

Morocco, South Africa

Cape Verde, Ethiopia, Ghana, South Africa, Western Africa

7.1.3 Europe

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

Albania, France, Germany, Great Britain, United Kingdom

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada, USA

7.2.2 South America

Argentina, Brazil, Colombia, Ecuador, Venezuela

Brazil, Colombia, Ecuador

7.3 Deposits in Oceania Continent

7.3.1 Australia

New Zealand, Western Australia

New South Wales, South Australia, Western Australia

Dunite vs Gossan 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 Gossan Reserves. Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine. Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.. 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 Gossan information and Dunite vs Gossan characteristics in the upcoming sections.

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Dunite vs Gossan 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 Gossan characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Dunite and Properties of Gossan. Learn more about Dunite vs Gossan in the next section. The interior uses of Dunite include Decorative aggregates and Interior decoration whereas the interior uses of Gossan include Countertops, Decorative aggregates and Interior decoration. Due to some exceptional properties of Dunite and Gossan, 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 Gossan include As dimension stone, Cement manufacture, Construction aggregate, For road aggregate.

More about Dunite and Gossan

Here you can know more about Dunite and Gossan. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Dunite and Gossan 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 Gossan includes Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon. You can also check out the list of all Igneous Rocks. When we have to compare Dunite vs Gossan, the texture, color and appearance plays an important role in determining the type of rock. Dunite is available in dark greenish - grey colors whereas, Gossan is available in brown, brown- black, gold, green, rust colors. Appearance of Dunite is Rough and Shiny and that of Gossan is Dull and Banded. Properties of rock is another aspect for Dunite vs Gossan. The hardness of Dunite is 3.5-4 and that of Gossan is 4-5. The types of Dunite are Not Available whereas types of Gossan are Translocated gossan and Leakage gossan. 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 Gossan is white to grey. The specific heat capacity of Dunite is 1.25 kJ/Kg K and that of Gossan is 0.24 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 Gossan is heat resistant, impact resistant, pressure resistant.