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Banded iron formation
Banded iron formation

Shale
Shale



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Banded iron formation
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Shale

Banded iron formation vs Shale

Definition

Definition

Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age
Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles

History

Origin

Western Australia, Minnesota
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Discoverer

Johann Gottlob Lehmann
Johann Gottlob Lehmann

Etymology

From its formation process
From German Schalstein laminated limestone, and Schalgebirge layer of stone in stratified rock. From Old English scealu in its base sense of- thing that divides or separate,

Class

Sedimentary Rocks
Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock

Family

Group

-
-

Other Categories

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

Texture

Texture

Banded, Trellis
Clastic, Splintery

Color

Red, Reddish Brown
Black, Brown, Buff, Green, Grey, Red, Yellow

Maintenance

Less
More

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Layered, Banded, Veined and Shiny
Muddy

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes
Decorative Aggregates, Homes, Interior Decoration

Exterior Uses

Paving Stone, Office Buildings
As Building Stone, As Facing Stone, Office Buildings

Other Architectural Uses

Curbing, Whetstones
Curbing

Industry

Construction Industry

As Dimension Stone, Used for flooring, stair treads, borders and window sills.
Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar

Medical Industry

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Antiquity Uses

Artifacts
Artifacts, Sculpture

Other Uses

Commercial Uses

As a touchstone, Cemetery Markers, Creating Artwork
Creating Artwork, Pottery

Types

Types

Algoma-type , Lake Superior-type, Superior-type and Taconite
Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale

Features

Is one of the oldest rock
Easily splits into thin plates, Generally rough to touch, Very fine grained rock

Archaeological Significance

Monuments

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Famous Monuments

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Jantar Mantar in India

Sculpture

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Famous Sculptures

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Pictographs

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Petroglyphs

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Figurines

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Fossils

Present
Present

Formation

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.
Shale forms when very fine-grained clay particles are deposited in water which settle at the bottom of water bodies. They are later compacted hence forming shale.

Composition

Mineral Content

Hematite, Magnetite, Quartz
Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides

Compound Content

Fe, Iron(III) Oxide, Silicon Dioxide
Ca, Fe, Mg, Silicon Dioxide, Sodium

Transformation

Metamorphism

Types of Metamorphism

-
-

Weathering

Types of Weathering

Chemical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

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

Properties

Physical Properties

Hardness

5.5-63
1 7
👆🏻

Grain Size

Large and Coarse Grained
Very fine-grained

Fracture

Uneven, Splintery or Conchoidal
-

Streak

White
White

Porosity

Highly Porous
Highly Porous

Luster

Earthy
Dull

Compressive Strength

220.00 N/mm295.00 N/mm2
0.15 450
👆🏻

Cleavage

-
Slaty

Toughness

1.5
2.6

Specific Gravity

5.0-5.32.2-2.8
0 8.4
👆🏻

Transparency

Translucent to Opaque
Opaque

Density

-9999 g/cm32.4-2.8 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

3.20 kJ/Kg K0.39 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Impact Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Africa

Kenya, Morocco, South Africa, Tanzania
Ethiopia, Kenya, Morocco, South Africa, Tanzania

Europe

Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland

Others

Greenland, Mid-Atlantic Ridge
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Deposits in Western Continents

North America

Canada, Mexico, USA
USA

South America

Bolivia, Brazil
Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela

Deposits in Oceania Continent

Australia

New South Wales, Queensland, South Australia, Western Australia
New South Wales, New Zealand, Queensland, Victoria, Western Australia

Banded iron formation vs Shale Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Banded iron formation and Shale Reserves. Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age. Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Banded iron formation vs Shale information and Banded iron formation vs Shale characteristics in the upcoming sections.

Banded iron formation vs Shale Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Banded iron formation vs Shale characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Banded iron formation and Properties of Shale. Learn more about Banded iron formation vs Shale in the next section. The interior uses of Banded iron formation include Decorative aggregates and Homes whereas the interior uses of Shale include Decorative aggregates, Homes and Interior decoration. Due to some exceptional properties of Banded iron formation and Shale, they have various applications in construction industry. The uses of Banded iron formation in construction industry include As dimension stone, Used for flooring, stair treads, borders and window sills. and that of Shale include Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar.

More about Banded iron formation and Shale

Here you can know more about Banded iron formation and Shale. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Banded iron formation and Shale consists of mineral content and compound content. The mineral content of Banded iron formation includes Hematite, Magnetite, Quartz and mineral content of Shale includes Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides. You can also check out the list of all Sedimentary Rocks. When we have to compare Banded iron formation vs Shale, the texture, color and appearance plays an important role in determining the type of rock. Banded iron formation is available in red, reddish brown colors whereas, Shale is available in black, brown, buff, green, grey, red, yellow colors. Appearance of Banded iron formation is Layered, Banded, Veined and Shiny and that of Shale is Muddy. Properties of rock is another aspect for Banded iron formation vs Shale. The hardness of Banded iron formation is 5.5-6 and that of Shale is 3. The types of Banded iron formation are Algoma-type , Lake Superior-type, Superior-type and Taconite whereas types of Shale are Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Banded iron formation and Shale is white. The specific heat capacity of Banded iron formation is 3.20 kJ/Kg K and that of Shale is 0.39 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Banded iron formation is heat resistant, impact resistant, pressure resistant, wear resistant whereas Shale is heat resistant, impact resistant.