Dunite

Turbidite

Dunite and Turbidite

Dunite

Turbidite

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Definition

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

A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles

History

Origin

New Zealand

European Foreland Basins

Discoverer

Ferdinand von Hochstetter

Arnold H. Bouma

Etymology

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

From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Soft Rock

Family

Group

Plutonic

Other Categories

Coarse Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Opaque Rock

Texture

Phaneritic

Mud-rich, Sandy

Color

Dark Greenish - Grey

Black, Brown, Green, Grey, Pink

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Shiny

Dull and Banded

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Bathrooms, Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration

Exterior Uses

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

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

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

As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

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

Cemetery Markers, Creating Artwork

Types

Dunite

Sedimentary rock

Features

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

High silica content, Host Rock for Lead

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

Formation

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

Turbidite is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. These particles then settle down and are subjected to high temperature and pressures hence forming Turbidite.

Composition

Mineral Content

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

Coesite, Quartz, Sand

Compound Content

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

CaO, Carbon Dioxide, MgO

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

Chemical Erosion, Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

3.5-43

1 7

👆🏻

Grain Size

Coarse Grained

Fine to Coarse Grained

Fracture

Irregular

Splintery

Streak

White

White, Greenish White or Grey

Porosity

Less Porous

Very Less Porous

Luster

Shiny

Metallic

Compressive Strength

107.55 N/mm²200.00 N/mm²

0.15 450

👆🏻

Cleavage

Disjunctive

Toughness

2.1

2.4

Specific Gravity

3-3.012.46-2.73

0 8.4

👆🏻

Transparency

Translucent to Opaque

Opaque

Density

2.84-2.85 g/cm³1.6-2.5 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

1.25 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Africa

Morocco, South Africa

Western Africa

Europe

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

Austria, Belarus, Romania, Switzerland, United Kingdom

Others

Deposits in Western Continents

North America

Canada, USA

South America

Argentina, Brazil, Colombia, Ecuador, Venezuela

Brazil, Colombia

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

All about Dunite and Turbidite Properties

Know all about Dunite and Turbidite properties here. All properties of rocks are important as they define the type of rock and its application. Dunite belongs to Igneous Rocks while Turbidite belongs to Sedimentary Rocks.Texture of Dunite is Phaneritic whereas that of Turbidite is Mud-rich, Sandy. Dunite appears Rough and Shiny and Turbidite appears Dull and Banded. The luster of Dunite is shiny while that of Turbidite is metallic. Dunite is available in dark greenish - grey colors whereas Turbidite is available in black, brown, green, grey, pink colors. The commercial uses of Dunite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds and that of Turbidite are cemetery markers, creating artwork.