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Migmatite
Migmatite

Mylonite
Mylonite



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Migmatite
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Mylonite

Migmatite vs Mylonite

Definition

Definition

Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components
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

Southern Alps, France
New Zealand

Discoverer

Jakob Sederholm
Unknown

Etymology

From the Greek word migma which means a mixture
From Greek mulōn mill + -ite

Class

Metamorphic Rocks
Metamorphic Rocks

Sub-Class

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

Family

Group

Not Applicable
Not Applicable

Other Categories

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

Texture

Texture

Foliated
Foliated

Color

Black, Bluish - Grey, Brown, Brown- Black, Dark Greenish - Grey, Dark Grey to Black
Black to Grey

Maintenance

More
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull, Banded and Foilated
Dull, Banded and Foilated

Uses

Architecture

Interior Uses

Countertops, Flooring, Kitchens
Decorative Aggregates, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone
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, Making natural cement
for Road Aggregate, Landscaping, Roadstone

Medical Industry

Not Available
Not Available

Antiquity Uses

Artifacts
Artifacts, Monuments

Other Uses

Commercial Uses

Cemetery Markers, Jewelry, Tombstones, Used to manufracture paperweights and bookends
Creating Artwork, Gemstone, Jewelry

Types

Types

Diatexites and Metatexites
Blastomylonites, Ultramylonites and Phyllonites

Features

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

Archaeological Significance

Monuments

Not Yet Used
Used

Famous Monuments

Not Applicable
Not Available

Sculpture

Not Yet Used
Used

Famous Sculptures

Not Applicable
Not Available

Pictographs

Used
Used

Petroglyphs

Used
Used

Figurines

Not Yet Used
Used

Fossils

Absent
Absent

Formation

Formation

Migmatites form by high temperature regional and thermal metamorphism of protolith rocks where rocks melt partially due to high temperature.
Mylonites are ductilely deformed rocks formed by the accumulation of large shear strain, in ductile fault zones.

Composition

Mineral Content

Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon
Porphyroblasts

Compound Content

Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
Aluminium Oxide, Calcium Sulfate, Chromium(III) Oxide, Iron(III) Oxide, Magnesium Carbonate, Silicon Dioxide

Transformation

Metamorphism

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism
Not Applicable

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

Chemical Erosion, Glacier Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5.5-6.53-4
1 7
👆🏻

Grain Size

Medium to Fine Coarse Grained
Fine Grained

Fracture

Irregular
Conchoidal

Streak

White
White

Porosity

Very Less Porous
Highly Porous

Luster

Dull to Pearly to Subvitreous
Shiny

Compressive Strength

NA1.28 N/mm2
0.15 450
👆🏻

Cleavage

Not Available
Conchoidal

Toughness

1.2
Not Available

Specific Gravity

2.65-2.752.97-3.05
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

Not Available2.6-4.8 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

NA1.50 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

China, India, Iran, Iraq, Kazakhstan, Kyrgyzstan, Mongolia, Russia
China, India, Indonesia, Saudi Arabia, South Korea

Africa

Cameroon, Ethiopia, Ghana, Kenya, Madagascar, Morocco, Mozambique, Namibia, Nigeria, Tanzania, Togo
Eritrea, Ethiopia, Ghana, South Africa, Western Africa

Europe

Albania, Austria, Bosnia and Herzegovina, Finland, France, Georgia, Germany, Hungary, Italy, Kosovo, Monaco, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, Sweden, Switzerland, Ukraine, United Kingdom
England, Finland, France, Germany, Great Britain, Greece, United Kingdom

Others

Not Available
Not Available

Deposits in Western Continents

North America

Canada, Costa Rica, Cuba, Mexico, Panama, USA
USA

South America

Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru, Venezuela
Not Available

Deposits in Oceania Continent

Australia

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

Migmatite 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 Migmatite and Mylonite Reserves. Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components. 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 Migmatite vs Mylonite information and Migmatite vs Mylonite characteristics in the upcoming sections.

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

More about Migmatite and Mylonite

Here you can know more about Migmatite and Mylonite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Migmatite and Mylonite consists of mineral content and compound content. The mineral content of Migmatite includes Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon and mineral content of Mylonite includes Porphyroblasts. You can also check out the list of all Metamorphic Rocks. When we have to compare Migmatite vs Mylonite, the texture, color and appearance plays an important role in determining the type of rock. Migmatite is available in black, bluish - grey, brown, brown- black, dark greenish - grey, dark grey to black colors whereas, Mylonite is available in black to grey colors. Appearance of Migmatite is Dull, Banded and Foilated and that of Mylonite is Dull, Banded and Foilated. Properties of rock is another aspect for Migmatite vs Mylonite. The hardness of Migmatite is 5.5-6.5 and that of Mylonite is 3-4. The types of Migmatite are Diatexites and Metatexites 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 Migmatite and Mylonite is white. The specific heat capacity of Migmatite is Not Available 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.Migmatite is heat resistant, pressure resistant whereas Mylonite is heat resistant, impact resistant, pressure resistant.