Banded iron formation

Serpentinite

Banded iron formation and Serpentinite

Banded iron formation

Serpentinite

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1 Definition

1.1 Definition

Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age

A hydration and metamorphic transformation of ultramafic rock from the Earth's mantle is called as serpentinization, a group of minerals is formed by serpentinization compose rock 'serpentinite'.

1.2 History

1.2.1 Origin

Western Australia, Minnesota

USA

1.2.2 Discoverer

Unknown

1.3 Etymology

From its formation process

From English word serpentinization.

1.4 Class

Sedimentary Rocks

Metamorphic Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Not Applicable

1.6 Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Banded, Trellis

Earthy

2.2 Color

Red, Reddish Brown

Black, Brown, Colourless, Green, Grey, White

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

Layered, Banded, Veined and Shiny

Rough and Dull

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Homes

Decorative Aggregates, Interior Decoration

3.1.2 Exterior Uses

Paving Stone, Office Buildings

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

3.1.3 Other Architectural Uses

Curbing, Whetstones

Curbing

3.2 Industry

3.2.1 Construction Industry

As Dimension Stone, Used for flooring, stair treads, borders and window sills.

As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts

Artifacts, Jewellery, Monuments, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

As a touchstone, Cemetery Markers, Creating Artwork

Commemorative Tablets, Creating Artwork

4 Types

4.1 Types

Algoma-type , Lake Superior-type, Superior-type and Taconite

Jadeitite

4.2 Features

Is one of the oldest rock

Host Rock for Lead

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Not Applicable

Data Not Available

4.3.3 Sculpture

Not Yet Used

Used

4.3.4 Famous Sculptures

Not Applicable

Data Not Available

4.3.5 Pictographs

Not Used

Used

4.3.6 Petroglyphs

Not Used

Used

4.3.7 Figurines

Not Yet Used

Used

4.4 Fossils

Present

Absent

5 Formation

5.1 Formation

The banded iron layers are formed in sea water when oxygen is released by photosynthetic cyano-bacteria. The oxygen then combines with dissolved iron in ocean to form insoluble iron oxides, which precipitated out, forming a thin layer of banded iron formation on ocean floor.

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

5.2 Composition

5.2.1 Mineral Content

Hematite, Magnetite, Quartz

Carbonate, Magnetite, Pyrrhotite, Serpentine, Sulfides

5.2.2 Compound Content

Fe, Iron(III) Oxide, Silicon Dioxide

Ca, CaO, Carbon Dioxide, KCl, MgO, Sulfur Dioxide, Sulphur

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Not Applicable

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

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Chemical Weathering

Not Applicable

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Coastal Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Wind Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

5.5-63-5

1 7

6.1.2 Grain Size

Large and Coarse Grained

Very fine-grained

6.1.3 Fracture

Uneven, Splintery or Conchoidal

Uneven

6.1.4 Streak

White

White, Greenish White or Grey

6.1.5 Porosity

Highly Porous

Less Porous

6.1.6 Luster

Earthy

Waxy and Dull

6.1.7 Compressive Strength

NA310.00 N/mm²

0.15 450

6.1.8 Cleavage

Imperfect

Irregular

6.1.9 Toughness

1.5

6.1.10 Specific Gravity

5.0-5.32.79-3

0 8.4

6.1.11 Transparency

Translucent to Opaque

Opaque

6.1.12 Density

Not Available2.5-3 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

3.20 kJ/Kg K0.95 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam

India, Saudi Arabia, Singapore, South Korea

7.1.2 Africa

Kenya, Morocco, South Africa, Tanzania

Ethiopia, Western Africa

7.1.3 Europe

Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom

England, Georgia, Switzerland, United Kingdom

7.1.4 Others

Greenland, Mid-Atlantic Ridge

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada, Mexico, USA

Canada

7.2.2 South America

Bolivia, Brazil

Colombia

7.3 Deposits in Oceania Continent

7.3.1 Australia

New South Wales, Queensland, South Australia, Western Australia

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

All about Banded iron formation and Serpentinite Properties

Know all about Banded iron formation and Serpentinite properties here. All properties of rocks are important as they define the type of rock and its application. Banded iron formation belongs to Sedimentary Rocks while Serpentinite belongs to Metamorphic Rocks.Texture of Banded iron formation is Banded, Trellis whereas that of Serpentinite is Earthy. Banded iron formation appears Layered, Banded, Veined and Shiny and Serpentinite appears Rough and Dull. The luster of Banded iron formation is earthy while that of Serpentinite is waxy and dull. Banded iron formation is available in red, reddish brown colors whereas Serpentinite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Banded iron formation are as a touchstone, cemetery markers, creating artwork and that of Serpentinite are commemorative tablets, creating artwork.