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Rapakivi Granite
Rapakivi Granite

Dunite
Dunite



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Rapakivi Granite
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Dunite

Rapakivi Granite vs Dunite

Definition

Definition

Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine

History

Origin

Finland, Europe
New Zealand

Discoverer

Jakob Sederholm
Ferdinand von Hochstetter

Etymology

From Finnish Rapakivi which stands for crumbly rock
From the name of Dun Mountain, New Zealand, + -ite1

Class

Igneous Rocks
Igneous Rocks

Sub-Class

Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock

Family

Group

Plutonic
Plutonic

Other Categories

Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock

Texture

Texture

Granular, Phaneritic
Phaneritic

Color

Black, Grey, Orange, Pink, White
Dark Greenish - Grey

Maintenance

More
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Veined or Pebbled
Rough and Shiny

Uses

Architecture

Interior Uses

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

Exterior Uses

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

Other Architectural Uses

-
Curbing

Industry

Construction Industry

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

Medical Industry

-
-

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling, Laboratory bench tops, Tombstones
Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds

Types

Types

Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite
Dunite

Features

Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock
Constitutes upper part of the Earth's mantle, Generally rough to touch, Host rock for Diamond, Is one of the oldest rock

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

Granite is an igneous rock which is very hard, crystalline and is visibly homogeneous in texture and forms by melting of continental rocks
Dunite is a plutonic ultramafic igneous rock consisting almost m olivine. It can be formed in two ways.

Composition

Mineral Content

Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz
Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene

Compound Content

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

Transformation

Metamorphism

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion
Coastal Erosion, Glacier Erosion, Water Erosion

Properties

Physical Properties

Hardness

6-73.5-4
1 7
👆🏻

Grain Size

Large and Coarse Grained
Coarse Grained

Fracture

-
Irregular

Streak

White
White

Porosity

Less Porous
Less Porous

Luster

Dull to Grainy with Sporadic parts Pearly and Vitreous
Shiny

Compressive Strength

175.00 N/mm2107.55 N/mm2
0.15 450
👆🏻

Cleavage

-
-

Toughness

-
2.1

Specific Gravity

2.6-2.73-3.01
0 8.4
👆🏻

Transparency

Opaque
Translucent to Opaque

Density

2.6-2.8 g/cm32.84-2.85 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.79 kJ/Kg K1.25 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Wear Resistant
Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
China, India, Indonesia, Kazakhstan, Russia, South Korea, Thailand, Turkey

Africa

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

Europe

Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic
Finland, France, Georgia, Germany, Great Britain, Italy, Kazakhstan, Netherlands, Norway, Spain, Switzerland

Others

-
-

Deposits in Western Continents

North America

Canada, USA
Canada, USA

South America

-
Argentina, Brazil, Colombia, Ecuador, Venezuela

Deposits in Oceania Continent

Australia

-
New Zealand, Western Australia

Rapakivi Granite vs Dunite 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 Rapakivi Granite and Dunite Reserves. Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine. 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 Rapakivi Granite vs Dunite information and Rapakivi Granite vs Dunite characteristics in the upcoming sections.

Rapakivi Granite vs Dunite 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. Rapakivi Granite vs Dunite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Rapakivi Granite and Properties of Dunite. Learn more about Rapakivi Granite vs Dunite in the next section. The interior uses of Rapakivi Granite include Bathrooms, Countertops, Decorative aggregates, Entryways, Floor tiles, Flooring, Homes, Hotels, Interior decoration, Kitchens and Stair treads whereas the interior uses of Dunite include Decorative aggregates and Interior decoration. Due to some exceptional properties of Rapakivi Granite and Dunite, they have various applications in construction industry. The uses of Rapakivi Granite in construction industry include As dimension stone and that of Dunite include As dimension stone, Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar.

More about Rapakivi Granite and Dunite

Here you can know more about Rapakivi Granite and Dunite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Rapakivi Granite and Dunite consists of mineral content and compound content. The mineral content of Rapakivi Granite includes Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz and mineral content of Dunite includes Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene. You can also check out the list of all Igneous Rocks. When we have to compare Rapakivi Granite vs Dunite, the texture, color and appearance plays an important role in determining the type of rock. Rapakivi Granite is available in black, grey, orange, pink, white colors whereas, Dunite is available in dark greenish - grey colors. Appearance of Rapakivi Granite is Veined or Pebbled and that of Dunite is Rough and Shiny. Properties of rock is another aspect for Rapakivi Granite vs Dunite. The hardness of Rapakivi Granite is 6-7 and that of Dunite is 3.5-4. The types of Rapakivi Granite are Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite whereas types of Dunite are Dunite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Rapakivi Granite and Dunite is white. The specific heat capacity of Rapakivi Granite is 0.79 kJ/Kg K and that of Dunite is 1.25 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Rapakivi Granite is heat resistant, wear resistant whereas Dunite is heat resistant, pressure resistant, wear resistant.