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Mylonite
Mylonite

Slate
Slate



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Mylonite
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Mylonite vs Slate

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Definition

Definition

Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism
Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism

History

Origin

New Zealand
England

Discoverer

Unknown
Abraham Gottlob Werner

Etymology

From Greek mulōn mill + -ite
From Old French esclate, from esclat (French éclat)

Class

Metamorphic Rocks
Metamorphic Rocks

Sub-Class

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

Family

Group

-
-

Other Categories

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

Texture

Texture

Foliated
Foliated

Color

Black to Grey
Black, Brown, Buff, Green, Light to Dark Grey, Purple, Red, Shades of Blue

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull, Banded and Foilated
Dull

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration
Bathrooms, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Interior Decoration, Kitchens, Stair Treads

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

for Road Aggregate, Landscaping, Roadstone
As Dimension Stone

Medical Industry

-
-

Antiquity Uses

Artifacts, Monuments
Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Creating Artwork, Gemstone, Jewelry
Blackboards, Commemorative Tablets, Laboratory bench tops, Standard material for the bed of Billiard table, Standard material for the beds of Pool and Snooker table, Tombstones, Used in aquariums, Writing Slates

Types

Types

Blastomylonites, Ultramylonites and Phyllonites
Phyllite, Schist, and Slate

Features

Surfaces are often shiny
Easily splits into thin plates, Surfaces are often shiny, Very fine grained rock

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

Mylonites are ductilely deformed rocks formed by the accumulation of large shear strain, in ductile fault zones.
Slate is a low grade metamorphic rock that is generally formed by metamorphosis of mudstone or shale, under relatively low pressure and temperature conditions.

Composition

Mineral Content

Porphyroblasts
Apatite, Biotite, Chlorite, Feldspar, Graphite, Hematite, Kaolinite, Magnetite, Pyrite, Tourmaline, Zircon

Compound Content

Aluminium Oxide, Calcium Sulfate, Chromium(III) Oxide, Iron(III) Oxide, Magnesium Carbonate, Silicon Dioxide
Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Titanium Dioxide

Transformation

Metamorphism

Types of Metamorphism

-
Burial Metamorphism, Cataclastic 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, Sea Erosion, Wind Erosion
Coastal Erosion, Glacier Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

3-43-4
1 7
👆🏻

Grain Size

Fine Grained
Very fine-grained

Fracture

Conchoidal
Splintery

Streak

White
Light to dark brown

Porosity

Highly Porous
Less Porous

Luster

Shiny
Dull

Compressive Strength

1.28 N/mm230.00 N/mm2
0.15 450
👆🏻

Cleavage

Conchoidal
Slaty

Toughness

-
1.2

Specific Gravity

2.97-3.052.65-2.8
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

2.6-4.8 g/cm32.6-2.8 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

1.50 kJ/Kg K0.76 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

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

Africa

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

Europe

England, Finland, France, Germany, Great Britain, Greece, United Kingdom
Belgium, France, Germany, Italy, Norway, Portugal, Spain, United Kingdom

Others

-
Arctic

Deposits in Western Continents

North America

USA
USA

South America

-
Brazil

Deposits in Oceania Continent

Australia

Central Australia, Western Australia
-

Mylonite vs Slate 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 Mylonite and Slate Reserves. Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism. Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional 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 Mylonite vs Slate information and Mylonite vs Slate characteristics in the upcoming sections.

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

More about Mylonite and Slate

Here you can know more about Mylonite and Slate. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Mylonite and Slate consists of mineral content and compound content. The mineral content of Mylonite includes Porphyroblasts and mineral content of Slate includes Apatite, Biotite, Chlorite, Feldspar, Graphite, Hematite, Kaolinite, Magnetite, Pyrite, Tourmaline, Zircon. You can also check out the list of all Metamorphic Rocks. When we have to compare Mylonite vs Slate, the texture, color and appearance plays an important role in determining the type of rock. Mylonite is available in black to grey colors whereas, Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors. Appearance of Mylonite is Dull, Banded and Foilated and that of Slate is Dull. Properties of rock is another aspect for Mylonite vs Slate. Hardness of Mylonite and Slate is 3-4. The types of Mylonite are Blastomylonites, Ultramylonites and Phyllonites whereas types of Slate are Phyllite, Schist, and Slate. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Mylonite is white while that of Slate is light to dark brown. The specific heat capacity of Mylonite is 1.50 kJ/Kg K and that of Slate is 0.76 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Mylonite is heat resistant, impact resistant, pressure resistant whereas Slate is heat resistant, impact resistant, pressure resistant, wear resistant.