Banded iron formation

Basalt

Banded iron formation and Basalt

Banded iron formation

Basalt

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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

Basalt is a common extrusive igneous rock formed by the rapid cooling of basaltic lava exposed at or very near the surface of Earth

1.2 History

1.2.1 Origin

Western Australia, Minnesota

Egypt

1.2.2 Discoverer

Unknown

Georgius Agricola

1.3 Etymology

From its formation process

From Late Latin Basaltes (variant of basanites ), very hard stone, which was imported from Ancient Greek Basanites

1.4 Class

Sedimentary Rocks

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Not Applicable

Volcanic

1.6 Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Banded, Trellis

Glassy, Massive, Porphyritic, Scoriaceous, Vesicular

2.2 Color

Red, Reddish Brown

Black, Brown, 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

Layered, Banded, Veined and Shiny

Dull and Soft

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Homes

Floor Tiles, Homes, Hotels, Kitchens

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

3.2 Industry

3.2.1 Construction Industry

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

Arrowheads, As Dimension Stone, Cobblestones, Cutting Tool, Rail Track Ballast, Roadstone

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts

Artifacts, Monuments

3.4 Other Uses

3.4.1 Commercial Uses

As a touchstone, Cemetery Markers, Creating Artwork

An Oil and Gas Reservoir, Commemorative Tablets, Creating Artwork, Used in aquariums

4 Types

4.1 Types

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

Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite

4.2 Features

Is one of the oldest rock

Has High structural resistance against erosion and climate, Very fine grained rock

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Not Applicable

Easter Island in the Polynesian Triangle, Pacific Ocean, Gateway of India in Mumbai, India, Gol Gumbaz in Karnataka, India

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.

Basalt forms when lava reaches the Earth's surface near an active volcano. The temperature of lava is between 1100 to 1250° C when it gets to the surface.

5.2 Composition

5.2.1 Mineral Content

Hematite, Magnetite, Quartz

Olivine, Plagioclase, Pyroxene

5.2.2 Compound Content

Fe, Iron(III) Oxide, Silicon Dioxide

Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Not Applicable

Contact Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Chemical Weathering

Biological Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Coastal Erosion, Wind Erosion

Not Available

6 Properties

6.1 Physical Properties

6.1.1 Hardness

5.5-66

1 7

6.1.2 Grain Size

Large and Coarse Grained

Fine Grained

6.1.3 Fracture

Uneven, Splintery or Conchoidal

Conchoidal

6.1.4 Streak

White

White to Grey

6.1.5 Porosity

Highly Porous

Less Porous

6.1.6 Luster

Earthy

Not Available

6.1.7 Compressive Strength

NA37.40 N/mm²

0.15 450

6.1.8 Cleavage

Imperfect

Not Available

6.1.9 Toughness

1.5

2.3

6.1.10 Specific Gravity

5.0-5.32.8-3

0 8.4

6.1.11 Transparency

Translucent to Opaque

Opaque

6.1.12 Density

Not Available2.9-3.1 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

3.20 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear 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, Russia

7.1.2 Africa

Kenya, Morocco, South Africa, Tanzania

South Africa

7.1.3 Europe

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

Iceland

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

7.3 Deposits in Oceania Continent

7.3.1 Australia

New South Wales, Queensland, South Australia, Western Australia

Not Yet Found

All about Banded iron formation and Basalt Properties

Know all about Banded iron formation and Basalt 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 Basalt belongs to Igneous Rocks.Texture of Banded iron formation is Banded, Trellis whereas that of Basalt is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Banded iron formation appears Layered, Banded, Veined and Shiny and Basalt appears Dull and Soft. The luster of Banded iron formation is earthy while that of Basalt is not available. Banded iron formation is available in red, reddish brown colors whereas Basalt is available in black, brown, light to dark grey colors. The commercial uses of Banded iron formation are as a touchstone, cemetery markers, creating artwork and that of Basalt are an oil and gas reservoir, commemorative tablets, creating artwork, used in aquariums.