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Anorthosite
Anorthosite

Mylonite
Mylonite



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Anorthosite
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Anorthosite vs Mylonite

Definition

Definition

Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase
Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism

History

Origin

-
New Zealand

Discoverer

Unknown
Unknown

Etymology

From French anorthose plagioclase + -ite1
From Greek mulōn mill + -ite

Class

Igneous Rocks
Metamorphic Rocks

Sub-Class

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

Family

Group

Plutonic
-

Other Categories

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

Texture

Texture

Foliated, Glassy
Foliated

Color

Black, Bluish - Grey, Brown, Green, Grey, Light Greenish Grey, Pink, White
Black to Grey

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Layered, Banded, Veined and Shiny
Dull, Banded and Foilated

Uses

Architecture

Interior Uses

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

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

As Dimension Stone, Cement Manufacture, for Road Aggregate
for Road Aggregate, Landscaping, Roadstone

Medical Industry

-
-

Antiquity Uses

Artifacts, Sculpture, Small Figurines
Artifacts, Monuments

Other Uses

Commercial Uses

Creating Artwork, Curling
Creating Artwork, Gemstone, Jewelry

Types

Types

Proterozoic Anorthosite and Archean Anorthosite
Blastomylonites, Ultramylonites and Phyllonites

Features

Generally rough to touch, Is one of the oldest rock
Surfaces are often shiny

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

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.
Mylonites are ductilely deformed rocks formed by the accumulation of large shear strain, in ductile fault zones.

Composition

Mineral Content

Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene
Porphyroblasts

Compound Content

Ca, CaO, Chromium(III) Oxide, MgO, Sulfur Trioxide
Aluminium Oxide, Calcium Sulfate, Chromium(III) Oxide, Iron(III) Oxide, Magnesium Carbonate, Silicon Dioxide

Transformation

Metamorphism

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism
-

Weathering

Types of Weathering

Biological Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

Chemical Erosion, Wind Erosion
Chemical Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5-63-4
1 7
👆🏻

Grain Size

Coarse Grained
Fine Grained

Fracture

Irregular
Conchoidal

Streak

White
White

Porosity

Less Porous
Highly Porous

Luster

Pearly to Subvitreous
Shiny

Compressive Strength

180.00 N/mm21.28 N/mm2
0.15 450
👆🏻

Cleavage

-
Conchoidal

Toughness

-
-

Specific Gravity

2.62-2.822.97-3.05
0 8.4
👆🏻

Transparency

Translucent
Opaque

Density

2.7-4 g/cm32.6-4.8 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K1.50 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

-
China, India, Indonesia, Saudi Arabia, South Korea

Africa

-
Eritrea, Ethiopia, Ghana, South Africa, Western Africa

Europe

Bulgaria, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Malta, Poland, Portugal, Romania, Slovenia, Spain, Sweden, The Czech Republic
England, Finland, France, Germany, Great Britain, Greece, United Kingdom

Others

-
-

Deposits in Western Continents

North America

Canada
USA

South America

Bolivia, Colombia
-

Deposits in Oceania Continent

Australia

Central Australia, South Australia, Western Australia
Central Australia, Western Australia

Anorthosite vs Mylonite 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 Anorthosite and Mylonite Reserves. Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase. Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism. 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 Anorthosite vs Mylonite information and Anorthosite vs Mylonite characteristics in the upcoming sections.

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

More about Anorthosite and Mylonite

Here you can know more about Anorthosite and Mylonite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Anorthosite and Mylonite consists of mineral content and compound content. The mineral content of Anorthosite includes Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene and mineral content of Mylonite includes Porphyroblasts. You can also check out the list of all Igneous Rocks. When we have to compare Anorthosite vs Mylonite, the texture, color and appearance plays an important role in determining the type of rock. Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors whereas, Mylonite is available in black to grey colors. Appearance of Anorthosite is Layered, Banded, Veined and Shiny and that of Mylonite is Dull, Banded and Foilated. Properties of rock is another aspect for Anorthosite vs Mylonite. The hardness of Anorthosite is 5-6 and that of Mylonite is 3-4. The types of Anorthosite are Proterozoic Anorthosite and Archean Anorthosite whereas types of Mylonite are Blastomylonites, Ultramylonites and Phyllonites. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Anorthosite and Mylonite is white. The specific heat capacity of Anorthosite is 0.84 kJ/Kg K and that of Mylonite is 1.50 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Anorthosite is heat resistant, impact resistant, pressure resistant, scratch resistant, wear resistant whereas Mylonite is heat resistant, impact resistant, pressure resistant.