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Shale
Shale

Gabbro
Gabbro



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Shale vs Gabbro

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Definition

Definition

Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt

History

Origin

-
Germany

Discoverer

Johann Gottlob Lehmann
Christian Leopold von Buch

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 Latin glaber bare, smooth, bald

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
Phaneritic

Color

Black, Brown, Buff, Green, Grey, Red, Yellow
Dark Grey to Black

Maintenance

More
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Muddy
Veined and Shiny

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration
Countertops, Decorative Aggregates, Homes, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

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

Medical Industry

-
-

Antiquity Uses

Artifacts, Sculpture
Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

Creating Artwork, Pottery
Cemetery Markers, Commemorative Tablets, Laboratory bench tops, Jewelry, Sea Defence, Tombstones

Types

Types

Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale
Anorthosite Gabbro and Norite Gabbro

Features

Easily splits into thin plates, Generally rough to touch, Very fine grained rock
Smooth to touch

Archaeological Significance

Monuments

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-

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.
Gabbro, a mafic rock, forms due to cooling and crystallization of magma underneath Earth's surface.

Composition

Mineral Content

Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides
Augite, Olivine, Plagioclase, Pyroxene

Compound Content

Ca, Fe, Mg, Silicon Dioxide, Sodium
Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide

Transformation

Metamorphism

Types of Metamorphism

-
Impact Metamorphism

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering
Chemical Weathering

Erosion

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion
Coastal Erosion

Properties

Physical Properties

Hardness

37
1 7
👆🏻

Grain Size

Very fine-grained
Coarse Grained

Fracture

-
Conchoidal

Streak

White
Black

Porosity

Highly Porous
Highly Porous

Luster

Dull
-

Compressive Strength

95.00 N/mm2225.00 N/mm2
0.15 450
👆🏻

Cleavage

Slaty
-

Toughness

2.6
1.6

Specific Gravity

2.2-2.82.86-2.87
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

2.4-2.8 g/cm32.7-3.3 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.39 kJ/Kg K0.71 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

Bangladesh, China, India, Russia
India, Russia

Africa

Ethiopia, Kenya, Morocco, South Africa, Tanzania
South Africa

Europe

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
Germany, Greece, Italy, Scotland, Turkey

Others

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Greenland

Deposits in Western Continents

North America

USA
Canada, USA

South America

Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
Brazil, Colombia, Venezuela

Deposits in Oceania Continent

Australia

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

Shale vs Gabbro 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 Gabbro Reserves. Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles. Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt. 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 Gabbro information and Shale vs Gabbro characteristics in the upcoming sections.

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

More about Shale and Gabbro

Here you can know more about Shale and Gabbro. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Shale and Gabbro 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 Gabbro includes Augite, Olivine, Plagioclase, Pyroxene. You can also check out the list of all Sedimentary Rocks. When we have to compare Shale vs Gabbro, 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, Gabbro is available in dark grey to black colors. Appearance of Shale is Muddy and that of Gabbro is Veined and Shiny. Properties of rock is another aspect for Shale vs Gabbro. The hardness of Shale is 3 and that of Gabbro is 7. The types of Shale are Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale whereas types of Gabbro are Anorthosite Gabbro and Norite Gabbro. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Shale is white while that of Gabbro is black. The specific heat capacity of Shale is 0.39 kJ/Kg K and that of Gabbro is 0.71 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 Gabbro is impact resistant, pressure resistant, wear resistant.