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Shale
Shale

Trachyte
Trachyte



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Shale vs Trachyte

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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
Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar

History

Origin

-
-

Discoverer

Johann Gottlob Lehmann
Alexandre Brongniart and René Just Haüy

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 Greek trakhus rough’ or trakhutēs roughness

Class

Sedimentary Rocks
Igneous Rocks

Sub-Class

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

Family

Group

-
Volcanic

Other Categories

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

Texture

Texture

Clastic, Splintery
Aphanitic to Porphyritic

Color

Black, Brown, Buff, Green, Grey, Red, Yellow
Black, Brown, Dark Greenish - Grey, Green, Grey, Light to Dark Grey, White

Maintenance

More
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Muddy
Banded

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration
Decorative Aggregates, Flooring, Homes, Interior Decoration

Exterior Uses

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

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, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories

Medical Industry

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-

Antiquity Uses

Artifacts, Sculpture
Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Creating Artwork, Pottery
Cemetery Markers, Creating Artwork

Types

Types

Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale
Felsic volcanic rock

Features

Easily splits into thin plates, Generally rough to touch, Very fine grained rock
Available in Lots of Colors and Patterns, Is one of the oldest rock, Matrix variable

Archaeological Significance

Monuments

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-

Famous Monuments

Jantar Mantar in India
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Sculpture

-
-

Famous Sculptures

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-

Pictographs

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-

Petroglyphs

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-

Figurines

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-

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.
Trachyte is an igneous volcanic rock with an aphanitic to porphyritic texture. It is the volcanic equivalent of syenite rock and forms as a result of magmatic differentiation.

Composition

Mineral Content

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

Compound Content

Ca, Fe, Mg, Silicon Dioxide, Sodium
Potassium Oxide, Sodium Oxide, Silicon Dioxide

Transformation

Metamorphism

Types of Metamorphism

-
Cataclastic Metamorphism, Contact Metamorphism, Regional 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, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

36
1 7
👆🏻

Grain Size

Very fine-grained
Fine Grained

Fracture

-
-

Streak

White
White

Porosity

Highly Porous
Less Porous

Luster

Dull
Metallic

Compressive Strength

95.00 N/mm2150.00 N/mm2
0.15 450
👆🏻

Cleavage

Slaty
-

Toughness

2.6
-

Specific Gravity

2.2-2.82.7
0 8.4
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Transparency

Opaque
Opaque

Density

2.4-2.8 g/cm32.43-2.45 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, 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
Bulgaria, England, Germany, Norway, Romania, Switzerland

Others

-
-

Deposits in Western Continents

North America

USA
USA

South America

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

Deposits in Oceania Continent

Australia

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

Shale vs Trachyte 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 Trachyte Reserves. Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles. Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar. 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 Trachyte information and Shale vs Trachyte characteristics in the upcoming sections.

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

More about Shale and Trachyte

Here you can know more about Shale and Trachyte. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Shale and Trachyte 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 Trachyte includes Augite, Biotite, Feldspar, Hornblade, Plagioclase, Quartz. You can also check out the list of all Sedimentary Rocks. When we have to compare Shale vs Trachyte, 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, Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors. Appearance of Shale is Muddy and that of Trachyte is Banded. Properties of rock is another aspect for Shale vs Trachyte. The hardness of Shale is 3 and that of Trachyte is 6. The types of Shale are Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale whereas types of Trachyte are Felsic volcanic rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Shale and Trachyte is white. The specific heat capacity of Shale is 0.39 kJ/Kg K and that of Trachyte 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 Trachyte is heat resistant, impact resistant, wear resistant.