Boninite

Banded iron formation

Boninite and Banded iron formation

Boninite

Banded iron formation

Add ⊕

1 Definition

1.1 Definition

Boninite is a mafic extrusive rock which is high in magnesium and silica content, formed in fore-arc environments, typically during the early stages of subduction

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

1.2 History

1.2.1 Origin

Japan

Western Australia, Minnesota

1.2.2 Discoverer

Unknown

1.3 Etymology

From its occurrence in the Izu-Bonin arc south of Japan

From its formation process

1.4 Class

Igneous Rocks

Sedimentary Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Volcanic

Not Applicable

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Aphanitic to Porphyritic

Banded, Trellis

2.2 Color

Bluish - Grey, Brown, Colourless, Green, Grey

Red, Reddish Brown

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 and Soft

Layered, Banded, Veined and Shiny

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Homes, Kitchens

Decorative Aggregates, Homes

3.1.2 Exterior Uses

Garden Decoration, Office Buildings

Paving Stone, Office Buildings

3.1.3 Other Architectural Uses

Not Yet Used

Curbing, Whetstones

3.2 Industry

3.2.1 Construction Industry

As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories

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

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts

3.4 Other Uses

3.4.1 Commercial Uses

An Oil and Gas Reservoir, Cemetery Markers, Creating Artwork, Soil Conditioner, Source of Magnesia (MgO)

As a touchstone, Cemetery Markers, Creating Artwork

4 Types

4.1 Types

Not Available

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

4.2 Features

Available in Lots of Colors and Patterns, High Mg content, Is one of the oldest rock

Is one of the oldest rock

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

4.3.2 Famous Monuments

Not Applicable

4.3.3 Sculpture

Not Yet Used

4.3.4 Famous Sculptures

Not Applicable

4.3.5 Pictographs

Not Used

4.3.6 Petroglyphs

Not Used

4.3.7 Figurines

Not Yet Used

4.4 Fossils

Absent

Present

5 Formation

5.1 Formation

Boninite is a type of Igneous rock which is formed through the cooling and solidification of lava or existing rocks.

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.

5.2 Composition

5.2.1 Mineral Content

Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite

Hematite, Magnetite, Quartz

5.2.2 Compound Content

Silicon Dioxide

Fe, Iron(III) Oxide, Silicon Dioxide

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Not Applicable

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering

Chemical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Chemical Erosion, Coastal Erosion, Wind Erosion

Coastal Erosion, Wind Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

75.5-6

1 7

6.1.2 Grain Size

Fine Grained

Large and Coarse Grained

6.1.3 Fracture

Uneven

Uneven, Splintery or Conchoidal

6.1.4 Streak

White

6.1.5 Porosity

Less Porous

Highly Porous

6.1.6 Luster

Vitreous

Earthy

6.1.7 Compressive Strength

NANA

0.15 450

6.1.8 Cleavage

Not Available

Imperfect

6.1.9 Toughness

1.1

1.5

6.1.10 Specific Gravity

2.5-2.85.0-5.3

0 8.4

6.1.11 Transparency

Opaque

Translucent to Opaque

6.1.12 Density

Not AvailableNot Available

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NA3.20 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

Not Available

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

7.1.2 Africa

South Africa

Kenya, Morocco, South Africa, Tanzania

7.1.3 Europe

England, Finland, United Kingdom

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

7.1.4 Others

Antarctica, Greenland

Greenland, Mid-Atlantic Ridge

7.2 Deposits in Western Continents

7.2.1 North America

USA

Canada, Mexico, USA

7.2.2 South America

Colombia, Uruguay

Bolivia, Brazil

7.3 Deposits in Oceania Continent

7.3.1 Australia

New Zealand, Western Australia

New South Wales, Queensland, South Australia, Western Australia

All about Boninite and Banded iron formation Properties

Know all about Boninite and Banded iron formation properties here. All properties of rocks are important as they define the type of rock and its application. Boninite belongs to Igneous Rocks while Banded iron formation belongs to Sedimentary Rocks.Texture of Boninite is Aphanitic to Porphyritic whereas that of Banded iron formation is Banded, Trellis. Boninite appears Dull and Soft and Banded iron formation appears Layered, Banded, Veined and Shiny. The luster of Boninite is vitreous while that of Banded iron formation is earthy. Boninite is available in bluish - grey, brown, colourless, green, grey colors whereas Banded iron formation is available in red, reddish brown colors. The commercial uses of Boninite are an oil and gas reservoir, cemetery markers, creating artwork, soil conditioner, source of magnesia (mgo) and that of Banded iron formation are as a touchstone, cemetery markers, creating artwork.