Banded iron formation

Turbidite

Banded iron formation and Turbidite

Banded iron formation

Turbidite

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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 sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles

1.2 History

1.2.1 Origin

Western Australia, Minnesota

European Foreland Basins

1.2.2 Discoverer

Unknown

Arnold H. Bouma

1.3 Etymology

From its formation process

From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939

1.4 Class

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

Coarse Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Banded, Trellis

Mud-rich, Sandy

2.2 Color

Red, Reddish Brown

Black, Brown, Colourless, Green, Grey, Pink

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

Dull and Banded

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Homes

Bathrooms, Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration

3.1.2 Exterior Uses

Paving Stone, Office Buildings

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

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, Construction Aggregate, for Road Aggregate, Making natural cement

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts

Artifacts, Monuments, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

As a touchstone, Cemetery Markers, Creating Artwork

Cemetery Markers, Creating Artwork

4 Types

4.1 Types

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

Not Available

4.2 Features

Is one of the oldest rock

High silica content, 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

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.

Turbidite is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. These particles then settle down and are subjected to high temperature and pressures hence forming Turbidite.

5.2 Composition

5.2.1 Mineral Content

Hematite, Magnetite, Quartz

Coesite, Quartz, Sand

5.2.2 Compound Content

Fe, Iron(III) Oxide, Silicon Dioxide

CaO, Carbon Dioxide, MgO

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

Chemical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Coastal Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

5.5-63

1 7

6.1.2 Grain Size

Large and Coarse Grained

Fine to Coarse Grained

6.1.3 Fracture

Uneven, Splintery or Conchoidal

Splintery

6.1.4 Streak

White

White, Greenish White or Grey

6.1.5 Porosity

Highly Porous

Very Less Porous

6.1.6 Luster

Earthy

Metallic

6.1.7 Compressive Strength

NA200.00 N/mm²

0.15 450

6.1.8 Cleavage

Imperfect

Disjunctive

6.1.9 Toughness

1.5

2.4

6.1.10 Specific Gravity

5.0-5.32.46-2.73

0 8.4

6.1.11 Transparency

Translucent to Opaque

Opaque

6.1.12 Density

Not Available1.6-2.5 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

3.20 kJ/Kg K0.92 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

Not Yet Found

7.1.2 Africa

Kenya, Morocco, South Africa, Tanzania

Western Africa

7.1.3 Europe

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

Austria, Belarus, Romania, 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, USA

7.2.2 South America

Bolivia, Brazil

Brazil, Colombia

7.3 Deposits in Oceania Continent

7.3.1 Australia

New South Wales, Queensland, South Australia, Western Australia

New Zealand, Western Australia

All about Banded iron formation and Turbidite Properties

Know all about Banded iron formation and Turbidite properties here. All properties of rocks are important as they define the type of rock and its application. Banded iron formation and Turbidite belong to Sedimentary Rocks.Texture of Banded iron formation is Banded, Trellis whereas that of Turbidite is Mud-rich, Sandy. Banded iron formation appears Layered, Banded, Veined and Shiny and Turbidite appears Dull and Banded. The luster of Banded iron formation is earthy while that of Turbidite is metallic. Banded iron formation is available in red, reddish brown colors whereas Turbidite is available in black, brown, colourless, green, grey, pink colors. The commercial uses of Banded iron formation and Turbidite are as a touchstone, cemetery markers, creating artwork.