Mylonite

Lignite

Mylonite and Lignite

Mylonite

Lignite

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1 Definition

1.1 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

Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat

1.2 History

1.2.1 Origin

New Zealand

France

1.2.2 Discoverer

Unknown

1.3 Etymology

From Greek mulōn mill + -ite

From French, Latin lignum wood + -ite1

1.4 Class

Metamorphic Rocks

Sedimentary Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Soft Rock

1.5 Family

1.5.1 Group

Not Applicable

1.6 Other Categories

Fine Grained Rock, Opaque Rock

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

2 Texture

2.1 Texture

Foliated

Amorphous, Glassy

2.2 Color

Black to Grey

Black, Brown, Dark Brown, Grey, Light to Dark Grey

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Dull, Banded and Foilated

Veined or Pebbled

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Interior Decoration

Not Yet Used

3.1.2 Exterior Uses

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

Not Yet Used

3.1.3 Other Architectural Uses

Curbing

Not Yet Used

3.2 Industry

3.2.1 Construction Industry

for Road Aggregate, Landscaping, Roadstone

for Road Aggregate, Steel Production

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Monuments

Not Yet Used

3.4 Other Uses

3.4.1 Commercial Uses

Creating Artwork, Gemstone, Jewelry

Electricity Generation

4 Types

4.1 Types

Blastomylonites, Ultramylonites and Phyllonites

Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite

4.2 Features

Surfaces are often shiny

Generally rough to touch, Helps in production of Heat and Electricity, Used as fossil fuel

4.3 Archaeological Significance

4.3.1 Monuments

Used

Not Yet Used

4.3.2 Famous Monuments

Data Not Available

Not Applicable

4.3.3 Sculpture

Used

Not Yet Used

4.3.4 Famous Sculptures

Data Not Available

Not Applicable

4.3.5 Pictographs

Used

4.3.6 Petroglyphs

Used

4.3.7 Figurines

Used

Not Yet Used

4.4 Fossils

Absent

Present

5 Formation

5.1 Formation

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

Coal formation takes place due to accumulation of plant debris in a swamp environment. The Coal formation process continues, as peat turns into lignite brown or black coal at increasing heat and pressure.

5.2 Composition

5.2.1 Mineral Content

Porphyroblasts

Not Available

5.2.2 Compound Content

Aluminium Oxide, Calcium Sulfate, Chromium(III) Oxide, Iron(III) Oxide, Magnesium Carbonate, Silicon Dioxide

Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Not Applicable

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Chemical Erosion, Sea Erosion, Wind Erosion

Chemical Erosion, Water Erosion, Wind Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

3-41

1 7

6.1.2 Grain Size

Fine Grained

Medium to Fine Coarse Grained

6.1.3 Fracture

Conchoidal

6.1.4 Streak

White

Black

6.1.5 Porosity

Highly Porous

6.1.6 Luster

Shiny

Dull to Vitreous to Submetallic

6.1.7 Compressive Strength

1.28 N/mm²NA

0.15 450

6.1.8 Cleavage

Conchoidal

Non-Existent

6.1.9 Toughness

Not Available

6.1.10 Specific Gravity

2.97-3.051.1-1.4

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

2.6-4.8 g/cm³800-801 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

1.50 kJ/Kg K1.26 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant, Pressure Resistant

Heat Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

China, India, Indonesia, Saudi Arabia, South Korea

Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam

7.1.2 Africa

Eritrea, Ethiopia, Ghana, South Africa, Western Africa

Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania

7.1.3 Europe

England, Finland, France, Germany, Great Britain, Greece, United Kingdom

Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

USA

Canada, Mexico, USA

7.2.2 South America

Not Yet Found

Brazil, Chile, Colombia, Venezuela

7.3 Deposits in Oceania Continent

7.3.1 Australia

Central Australia, Western Australia

New South Wales, Queensland, Victoria

All about Mylonite and Lignite Properties

Know all about Mylonite and Lignite properties here. All properties of rocks are important as they define the type of rock and its application. Mylonite belongs to Metamorphic Rocks while Lignite belongs to Sedimentary Rocks.Texture of Mylonite is Foliated whereas that of Lignite is Amorphous, Glassy. Mylonite appears Dull, Banded and Foilated and Lignite appears Veined or Pebbled. The luster of Mylonite is shiny while that of Lignite is dull to vitreous to submetallic. Mylonite is available in black to grey colors whereas Lignite is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Mylonite are creating artwork, gemstone, jewelry and that of Lignite are electricity generation.