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Shale
Shale

Anorthosite
Anorthosite



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Shale vs Anorthosite

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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
Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase

History

Origin

-
-

Discoverer

Johann Gottlob Lehmann
Unknown

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 French anorthose plagioclase + -ite1

Class

Sedimentary Rocks
Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock

Family

Group

-
Plutonic

Other Categories

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

Texture

Texture

Clastic, Splintery
Foliated, Glassy

Color

Black, Brown, Buff, Green, Grey, Red, Yellow
Black, Bluish - Grey, Brown, Green, Grey, Light Greenish Grey, Pink, White

Maintenance

More
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Muddy
Layered, Banded, Veined and Shiny

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration

Exterior Uses

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

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, Cement Manufacture, for Road Aggregate

Medical Industry

-
-

Antiquity Uses

Artifacts, Sculpture
Artifacts, Sculpture, Small Figurines

Other Uses

Commercial Uses

Creating Artwork, Pottery
Creating Artwork, Curling

Types

Types

Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale
Proterozoic Anorthosite and Archean Anorthosite

Features

Easily splits into thin plates, Generally rough to touch, Very fine grained rock
Generally rough to touch, Is one of the oldest rock

Archaeological Significance

Monuments

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-

Famous Monuments

Jantar Mantar in India
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Sculpture

-
-

Famous Sculptures

-
-

Pictographs

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-

Petroglyphs

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-

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.
Anorthosite is a phaneritic, intrusive igneous rock which is characterized by a predominance of plagioclase feldspar which is almost 90–100%, and a minimal mafic component.

Composition

Mineral Content

Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides
Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene

Compound Content

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

Transformation

Metamorphism

Types of Metamorphism

-
Cataclastic Metamorphism, Contact Metamorphism

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering

Erosion

Types of Erosion

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

Properties

Physical Properties

Hardness

35-6
1 7
👆🏻

Grain Size

Very fine-grained
Coarse Grained

Fracture

-
Irregular

Streak

White
White

Porosity

Highly Porous
Less Porous

Luster

Dull
Pearly to Subvitreous

Compressive Strength

95.00 N/mm2180.00 N/mm2
0.15 450
👆🏻

Cleavage

Slaty
-

Toughness

2.6
-

Specific Gravity

2.2-2.82.62-2.82
0 8.4
👆🏻

Transparency

Opaque
Translucent

Density

2.4-2.8 g/cm32.7-4 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.39 kJ/Kg K0.84 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

Bangladesh, China, India, Russia
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Africa

Ethiopia, Kenya, Morocco, South Africa, Tanzania
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Europe

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
Bulgaria, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Malta, Poland, Portugal, Romania, Slovenia, Spain, Sweden, The Czech Republic

Others

-
-

Deposits in Western Continents

North America

USA
Canada

South America

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

Deposits in Oceania Continent

Australia

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

Shale vs Anorthosite 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 Anorthosite Reserves. Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles. Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase. 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 Anorthosite information and Shale vs Anorthosite characteristics in the upcoming sections.

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

More about Shale and Anorthosite

Here you can know more about Shale and Anorthosite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Shale and Anorthosite 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 Anorthosite includes Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene. You can also check out the list of all Sedimentary Rocks. When we have to compare Shale vs Anorthosite, 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, Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors. Appearance of Shale is Muddy and that of Anorthosite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Shale vs Anorthosite. The hardness of Shale is 3 and that of Anorthosite is 5-6. The types of Shale are Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale whereas types of Anorthosite are Proterozoic Anorthosite and Archean Anorthosite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Shale and Anorthosite is white. The specific heat capacity of Shale is 0.39 kJ/Kg K and that of Anorthosite is 0.84 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 Anorthosite is heat resistant, impact resistant, pressure resistant, scratch resistant, wear resistant.