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Shale
Shale

Rapakivi Granite
Rapakivi Granite



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Rapakivi Granite

Shale vs Rapakivi Granite

Definition

Definition

Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles
Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase

History

Origin

-
Finland, Europe

Discoverer

Johann Gottlob Lehmann
Jakob Sederholm

Etymology

From German Schalstein laminated limestone, and Schalgebirge layer of stone in stratified rock. From Old English scealu in its base sense of- thing that divides or separate,
From Finnish Rapakivi which stands for crumbly rock

Class

Sedimentary Rocks
Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock

Family

Group

-
Plutonic

Other Categories

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

Texture

Texture

Clastic, Splintery
Granular, Phaneritic

Color

Black, Brown, Buff, Green, Grey, Red, Yellow
Black, Grey, Orange, Pink, White

Maintenance

More
More

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Muddy
Veined or Pebbled

Uses

Architecture

Interior Uses

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

Exterior Uses

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

Other Architectural Uses

Curbing
-

Industry

Construction Industry

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

Medical Industry

-
-

Antiquity Uses

Artifacts, Sculpture
Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Creating Artwork, Pottery
Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling, Laboratory bench tops, Tombstones

Types

Types

Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale
Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite

Features

Easily splits into thin plates, Generally rough to touch, Very fine grained rock
Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock

Archaeological Significance

Monuments

-
-

Famous Monuments

Jantar Mantar in India
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Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Present
Absent

Formation

Formation

Shale forms when very fine-grained clay particles are deposited in water which settle at the bottom of water bodies. They are later compacted hence forming shale.
Granite is an igneous rock which is very hard, crystalline and is visibly homogeneous in texture and forms by melting of continental rocks

Composition

Mineral Content

Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz

Compound Content

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

Transformation

Metamorphism

Types of 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, Glacier Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

36-7
1 7
👆🏻

Grain Size

Very fine-grained
Large and Coarse Grained

Fracture

-
-

Streak

White
White

Porosity

Highly Porous
Less Porous

Luster

Dull
Dull to Grainy with Sporadic parts Pearly and Vitreous

Compressive Strength

95.00 N/mm2175.00 N/mm2
0.15 450
👆🏻

Cleavage

Slaty
-

Toughness

2.6
-

Specific Gravity

2.2-2.82.6-2.7
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

2.4-2.8 g/cm32.6-2.8 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.39 kJ/Kg K0.79 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Impact Resistant
Heat Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Africa

Ethiopia, Kenya, Morocco, South Africa, Tanzania
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

Europe

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic

Others

-
-

Deposits in Western Continents

North America

USA
Canada, USA

South America

Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
-

Deposits in Oceania Continent

Australia

New South Wales, New Zealand, Queensland, Victoria, Western Australia
-

Shale vs Rapakivi Granite 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 Shale and Rapakivi Granite Reserves. Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles. Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. 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 Shale vs Rapakivi Granite information and Shale vs Rapakivi Granite characteristics in the upcoming sections.

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

More about Shale and Rapakivi Granite

Here you can know more about Shale and Rapakivi Granite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Shale and Rapakivi Granite consists of mineral content and compound content. The mineral content of Shale includes Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides and mineral content of Rapakivi Granite includes Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz. You can also check out the list of all Sedimentary Rocks. When we have to compare Shale vs Rapakivi Granite, the texture, color and appearance plays an important role in determining the type of rock. Shale is available in black, brown, buff, green, grey, red, yellow colors whereas, Rapakivi Granite is available in black, grey, orange, pink, white colors. Appearance of Shale is Muddy and that of Rapakivi Granite is Veined or Pebbled. Properties of rock is another aspect for Shale vs Rapakivi Granite. The hardness of Shale is 3 and that of Rapakivi Granite is 6-7. The types of Shale are Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale whereas types of Rapakivi Granite are Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Shale and Rapakivi Granite is white. The specific heat capacity of Shale is 0.39 kJ/Kg K and that of Rapakivi Granite is 0.79 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Shale is heat resistant, impact resistant whereas Rapakivi Granite is heat resistant, wear resistant.