Dunite and Adamellite

Dunite

Adamellite

Definition

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

Adamellite is a coarse-grained porphyritic igneous rock, a variety of Monzogranite and dominated by phenocrysts of orthoclase in a granular groundmass of perthite, plagioclase and quartz

History

Origin

New Zealand

Italy

Discoverer

Ferdinand von Hochstetter

Unknown

Etymology

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

From German adamellit and from Monte Adamello, a mountain in Italy, its locality

Class

Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

Family

Group

Plutonic

Other Categories

Coarse Grained Rock, Opaque Rock

Texture

Phaneritic

Porphyritic

Color

Dark Greenish - Grey

Black, Grey, Orange, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Rough and Shiny

Veined or Pebbled

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Bathrooms, Countertops, Decorative Aggregates, Entryways, Floor Tiles, Homes, Hotels, Kitchens, Stair Treads

Exterior Uses

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

As Building Stone, As Facing Stone, Bridges, Paving Stone, Near Swimming Pools, Office Buildings, Resorts

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

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

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

Curling, Gemstone, Laboratory bench tops, Tombstones

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

Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock

Archaeological Significance

Monuments

Used

Famous Monuments

Data Not Available

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Used

Not Used

Petroglyphs

Used

Not Used

Figurines

Used

Fossils

Absent

Formation

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

Adamellite is a type of Igneous rock which is formed through the cooling and solidification of lava or magma and is a variety of Monzogranite.

Composition

Mineral Content

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

Apatite, Biotite, Chlorite, Orthoclase, Perthite, Plagioclase, Quartz, Titanite, Zircon

Compound Content

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

Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

Transformation

Metamorphism

Yes

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Burial Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering

Erosion

Yes

Types of Erosion

Coastal Erosion, Glacier Erosion, Water Erosion

Chemical Erosion, Glacier Erosion, Wind Erosion

Properties

Physical Properties

Hardness

3.5-4

6-7

Grain Size

Coarse Grained

Fracture

Irregular

Not Available

Streak

White

Porosity

Less Porous

Luster

Shiny

Dull to Grainy with Sporadic parts Pearly and Vitreous

Compressive Strength

107.55 N/mm²

175.00 N/mm²

Cleavage

Imperfect

Not Available

Toughness

2.1

Not Available

Specific Gravity

3-3.01

2.6-2.7

Transparency

Translucent to Opaque

Opaque

Density

2.84-2.85 g/cm³

2.6-2.8 g/cm³

Thermal Properties

Specific Heat Capacity

1.25 kJ/Kg K

0.79 kJ/Kg K

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

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

China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam

Africa

Morocco, South Africa

Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

Europe

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

Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela

Others

Not Yet Found

Deposits in Western Continents

North America

Canada, USA

South America

Argentina, Brazil, Colombia, Ecuador, Venezuela

Not Yet Found

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

Not Yet Found

Summary >>

<< Reserves

All about Dunite and Adamellite Properties

Know all about Dunite and Adamellite properties here. All properties of rocks are important as they define the type of rock and its application. Dunite and Adamellite belong to Igneous Rocks.Texture of Dunite is Phaneritic whereas that of Adamellite is Porphyritic. Dunite appears Rough and Shiny and Adamellite appears Veined or Pebbled. The luster of Dunite is shiny while that of Adamellite is dull to grainy with sporadic parts pearly and vitreous. Dunite is available in dark greenish - grey colors whereas Adamellite is available in black, grey, orange, pink, white colors. The commercial uses of Dunite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds and that of Adamellite are curling, gemstone, laboratory bench tops, tombstones.