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Trachyte
Trachyte

Skarn
Skarn



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Trachyte
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Trachyte vs Skarn

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Definition

Definition

Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar
Skarns are formed during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, and/or marine origin

History

Origin

-
USA, Australia

Discoverer

Alexandre Brongniart and René Just Haüy
Tornebohm

Etymology

From Greek trakhus rough’ or trakhutēs roughness
From an old Swedish mining term originally used to describe a type of silicate gangue or waste rock.

Class

Igneous Rocks
Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock

Family

Group

Volcanic
-

Other Categories

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

Texture

Texture

Aphanitic to Porphyritic
Earthy, Mud-rich, Rough

Color

Black, Brown, Dark Greenish - Grey, Green, Grey, Light to Dark Grey, White
Black, Brown, Green, Grey, White

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Banded
Dull

Uses

Architecture

Interior Uses

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

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Gold and Silver production, Manufacture of Magnesium and Dolomite Refractories

Medical Industry

-
-

Antiquity Uses

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

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork
Creating Artwork, Gemstone, Jewelry, Metallurgical Flux, Source of Magnesia (MgO)

Types

Types

Felsic volcanic rock
Endoskarns

Features

Available in Lots of Colors and Patterns, Is one of the oldest rock, Matrix variable
Host Rock for Lead, Zinc and Copper Deposits

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

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.
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Skarn is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

Composition

Mineral Content

Augite, Biotite, Feldspar, Hornblade, Plagioclase, Quartz
Calcite, Enstatite, Epidote, Garnet, Magnetite, Pyroxene, Titanite

Compound Content

Potassium Oxide, Sodium Oxide, Silicon Dioxide
Au, CaO, Carbon Dioxide, Cu, Fe, MgO

Transformation

Metamorphism

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering
-

Erosion

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
-

Properties

Physical Properties

Hardness

66.5
1 7
👆🏻

Grain Size

Fine Grained
Fine Grained

Fracture

-
Irregular

Streak

White
Light to dark brown

Porosity

Less Porous
Less Porous

Luster

Metallic
Waxy and Dull

Compressive Strength

150.00 N/mm270.00 N/mm2
0.15 450
👆🏻

Cleavage

-
Slaty

Toughness

-
2.4

Specific Gravity

2.72.86
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

2.43-2.45 g/cm32.8-2.9 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.92 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Impact Resistant, Wear Resistant
Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Africa

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

Europe

Bulgaria, England, Germany, Norway, Romania, Switzerland
United Kingdom

Others

-
-

Deposits in Western Continents

North America

USA
Canada

South America

Brazil, Chile
Brazil, Colombia, Paraguay

Deposits in Oceania Continent

Australia

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

Trachyte vs Skarn 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 Trachyte and Skarn Reserves. Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar. Skarns are formed during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, and/or marine origin. 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 Trachyte vs Skarn information and Trachyte vs Skarn characteristics in the upcoming sections.

Trachyte vs Skarn 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. Trachyte vs Skarn characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Trachyte and Properties of Skarn. Learn more about Trachyte vs Skarn in the next section. The interior uses of Trachyte include Decorative aggregates, Flooring, Homes and Interior decoration whereas the interior uses of Skarn include Decorative aggregates, Entryways and Interior decoration. Due to some exceptional properties of Trachyte and Skarn, they have various applications in construction industry. The uses of Trachyte in construction industry 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 and that of Skarn include As a flux in the production of steel and pig iron, As a sintering agent in steel industry to process iron ore, As dimension stone, Gold and silver production, Manufacture of magnesium and dolomite refractories.

More about Trachyte and Skarn

Here you can know more about Trachyte and Skarn. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Trachyte and Skarn consists of mineral content and compound content. The mineral content of Trachyte includes Augite, Biotite, Feldspar, Hornblade, Plagioclase, Quartz and mineral content of Skarn includes Calcite, Enstatite, Epidote, Garnet, Magnetite, Pyroxene, Titanite. You can also check out the list of all Igneous Rocks. When we have to compare Trachyte vs Skarn, the texture, color and appearance plays an important role in determining the type of rock. Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors whereas, Skarn is available in black, brown, green, grey, white colors. Appearance of Trachyte is Banded and that of Skarn is Dull. Properties of rock is another aspect for Trachyte vs Skarn. The hardness of Trachyte is 6 and that of Skarn is 6.5. The types of Trachyte are Felsic volcanic rock whereas types of Skarn are Endoskarns. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Trachyte is white while that of Skarn is light to dark brown. The specific heat capacity of Trachyte is 0.84 kJ/Kg K and that of Skarn is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Trachyte is heat resistant, impact resistant, wear resistant whereas Skarn is heat resistant.