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Banded iron formation
Banded iron formation

Soapstone
Soapstone



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Banded iron formation
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Soapstone

Banded iron formation vs Soapstone

Definition

Definition

Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age
It is a metamorphic magnesium rich rock because it is composed of the mineral talc

History

Origin

Western Australia, Minnesota
USA

Discoverer

Johann Gottlob Lehmann
Unknown

Etymology

From its formation process
From 17th century, because of its greasy feel and use like a soap

Class

Sedimentary Rocks
Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock

Family

Group

-
-

Other Categories

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

Texture

Texture

Banded, Trellis
Polished

Color

Red, Reddish Brown
Black, Black to Grey, Green, Grey

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Layered, Banded, Veined and Shiny
Dull, Banded and Foilated

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes
Bathrooms, Decorative Aggregates, Homes, Interior Decoration

Exterior Uses

Paving Stone, Office Buildings
As Facing Stone, Garden Decoration

Other Architectural Uses

Curbing, Whetstones
Curbing

Industry

Construction Industry

As Dimension Stone, Used for flooring, stair treads, borders and window sills.
Manufacture of Magnesium and Dolomite Refractories

Medical Industry

-
Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts
Artifacts, Jewellery, Monuments, Sculpture

Other Uses

Commercial Uses

As a touchstone, Cemetery Markers, Creating Artwork
Cemetery Markers, Creating Artwork, Gemstone, Jewelry, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Production of Lime, Source of Magnesia (MgO)

Types

Types

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

Features

Is one of the oldest rock
Host Rock for Lead

Archaeological Significance

Monuments

-
-

Famous Monuments

-
Christ the Redeemer in Rio de Janeiro, Stonehenge in English county of Wiltshire

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Present
Absent

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.
Soapstone is a talc-schist, which is a type of metamorphic rock and it is largely composed of the mineral talc and is thus rich inmagnesium.

Composition

Mineral Content

Hematite, Magnetite, Quartz
Albite, Apatite, Biotite, Calcite, Carbonate, Clay Minerals, Hornblende, Ilmenite, Micas, Plagioclase, Pyroxene, Quartz

Compound Content

Fe, Iron(III) Oxide, Silicon Dioxide
CaO, Mg, MgO

Transformation

Metamorphism

Types of Metamorphism

-
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

Types of Weathering

Chemical Weathering
-

Erosion

Types of Erosion

Coastal Erosion, Wind Erosion
-

Properties

Physical Properties

Hardness

5.5-61
1 7
👆🏻

Grain Size

Large and Coarse Grained
Fine Grained

Fracture

Uneven, Splintery or Conchoidal
Conchoidal

Streak

White
Black

Porosity

Highly Porous
Less Porous

Luster

Earthy
Greasy

Compressive Strength

220.00 N/mm2225.00 N/mm2
0.15 450
👆🏻

Cleavage

-
Perfect

Toughness

1.5
1

Specific Gravity

5.0-5.32.86
0 8.4
👆🏻

Transparency

Translucent to Opaque
Opaque

Density

-9999 g/cm32.8-2.9 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

3.20 kJ/Kg K0.88 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
China, India, Indonesia, Japan, North Korea, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Tajikistan, Thailand

Africa

Kenya, Morocco, South Africa, Tanzania
Egypt, Ethiopia, Ghana, South Africa, Western Africa

Europe

Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
Austria, England, Finland, France, Germany, Greece, Spain, Sweden, Switzerland, United Kingdom

Others

Greenland, Mid-Atlantic Ridge
-

Deposits in Western Continents

North America

Canada, Mexico, USA
Canada, USA

South America

Bolivia, Brazil
Colombia

Deposits in Oceania Continent

Australia

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

Banded iron formation vs Soapstone 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 Soapstone Reserves. Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age. It is a metamorphic magnesium rich rock because it is composed of the mineral talc. 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 Soapstone information and Banded iron formation vs Soapstone characteristics in the upcoming sections.

Banded iron formation vs Soapstone 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 Soapstone characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Banded iron formation and Properties of Soapstone. Learn more about Banded iron formation vs Soapstone in the next section. The interior uses of Banded iron formation include Decorative aggregates and Homes whereas the interior uses of Soapstone include Bathrooms, Decorative aggregates, Homes and Interior decoration. Due to some exceptional properties of Banded iron formation and Soapstone, 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 Soapstone include Manufacture of magnesium and dolomite refractories.

More about Banded iron formation and Soapstone

Here you can know more about Banded iron formation and Soapstone. 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 Soapstone consists of mineral content and compound content. The mineral content of Banded iron formation includes Hematite, Magnetite, Quartz and mineral content of Soapstone includes Albite, Apatite, Biotite, Calcite, Carbonate, Clay Minerals, Hornblende, Ilmenite, Micas, Plagioclase, Pyroxene, Quartz. You can also check out the list of all Sedimentary Rocks. When we have to compare Banded iron formation vs Soapstone, 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, Soapstone is available in black, black to grey, green, grey colors. Appearance of Banded iron formation is Layered, Banded, Veined and Shiny and that of Soapstone is Dull, Banded and Foilated. Properties of rock is another aspect for Banded iron formation vs Soapstone. The hardness of Banded iron formation is 5.5-6 and that of Soapstone is 1. The types of Banded iron formation are Algoma-type , Lake Superior-type, Superior-type and Taconite whereas types of Soapstone are Metamorphic rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Banded iron formation is white while that of Soapstone is black. The specific heat capacity of Banded iron formation is 3.20 kJ/Kg K and that of Soapstone is 0.88 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 Soapstone is heat resistant, pressure resistant.