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Banded iron formation
Banded iron formation

Felsite
Felsite



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Banded iron formation
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Felsite

Banded iron formation vs Felsite

Definition

Definition

Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age
Felsite is a very fine grained volcanic rock that may or may not contain larger crystals and light colored rock that typically requires petrographic examination or chemical analysis for more precise definition

History

Origin

Western Australia, Minnesota
-

Discoverer

Johann Gottlob Lehmann
Unknown

Etymology

From its formation process
From English feldspar and -ite

Class

Sedimentary Rocks
Igneous Rocks

Sub-Class

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

Family

Group

-
Volcanic

Other Categories

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

Texture

Texture

Banded, Trellis
Arborescent Patterned, Vitreous

Color

Red, Reddish Brown
Black, Blue, Brown, Green, Orange, Red, Tan, Yellow

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Layered, Banded, Veined and Shiny
Layered, Banded, Veined and Shiny

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes
Decorative Aggregates, Flooring, Interior Decoration

Exterior Uses

Paving Stone, Office Buildings
Paving Stone, Garden Decoration

Other Architectural Uses

Curbing, Whetstones
Curbing

Industry

Construction Industry

As Dimension Stone, Used for flooring, stair treads, borders and window sills.
Arrowheads, Cutting Tool, Knives, Scrapers, Spear Points

Medical Industry

-
Surgery

Antiquity Uses

Artifacts
Artifacts

Other Uses

Commercial Uses

As a touchstone, Cemetery Markers, Creating Artwork
Mirror, Jewelry

Types

Types

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

Features

Is one of the oldest rock
Available in Lots of Colors and Patterns, Clasts are smooth to touch, Splintery, Very fine grained rock

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

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.
Felsite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

Composition

Mineral Content

Hematite, Magnetite, Quartz
Feldspar, Iron Oxides

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

Transformation

Metamorphism

Types of Metamorphism

-
Burial Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

Types of Weathering

Chemical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

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

Properties

Physical Properties

Hardness

5.5-65-5.5
1 7
👆🏻

Grain Size

Large and Coarse Grained
Fine Grained

Fracture

Uneven, Splintery or Conchoidal
Conchoidal

Streak

White
White

Porosity

Highly Porous
Very Less Porous

Luster

Earthy
Vitreous

Compressive Strength

220.00 N/mm20.15 N/mm2
0.15 450
👆🏻

Cleavage

-
-

Toughness

1.5
-

Specific Gravity

5.0-5.32.6-2.7
0 8.4
👆🏻

Transparency

Translucent to Opaque
Translucent

Density

-9999 g/cm32.6 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

3.20 kJ/Kg K0.92 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
Afghanistan, Indonesia, Japan, Russia

Africa

Kenya, Morocco, South Africa, Tanzania
Kenya

Europe

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

Others

Greenland, Mid-Atlantic Ridge
-

Deposits in Western Continents

North America

Canada, Mexico, USA
Canada, Mexico, USA

South America

Bolivia, Brazil
Argentina, Chile, Ecuador, Peru

Deposits in Oceania Continent

Australia

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

Banded iron formation vs Felsite 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 Felsite Reserves. Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age. Felsite is a very fine grained volcanic rock that may or may not contain larger crystals and light colored rock that typically requires petrographic examination or chemical analysis for more precise definition. 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 Felsite information and Banded iron formation vs Felsite characteristics in the upcoming sections.

Banded iron formation vs Felsite 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 Felsite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Banded iron formation and Properties of Felsite. Learn more about Banded iron formation vs Felsite in the next section. The interior uses of Banded iron formation include Decorative aggregates and Homes whereas the interior uses of Felsite include Decorative aggregates, Flooring and Interior decoration. Due to some exceptional properties of Banded iron formation and Felsite, 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 Felsite include Arrowheads, Cutting tool, Knives, Scrapers, Spear points.

More about Banded iron formation and Felsite

Here you can know more about Banded iron formation and Felsite. 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 Felsite consists of mineral content and compound content. The mineral content of Banded iron formation includes Hematite, Magnetite, Quartz and mineral content of Felsite includes Feldspar, Iron Oxides. You can also check out the list of all Sedimentary Rocks. When we have to compare Banded iron formation vs Felsite, 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, Felsite is available in black, blue, brown, green, orange, red, tan, yellow colors. Appearance of Banded iron formation is Layered, Banded, Veined and Shiny and that of Felsite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Banded iron formation vs Felsite. The hardness of Banded iron formation is 5.5-6 and that of Felsite is 5-5.5. The types of Banded iron formation are Algoma-type , Lake Superior-type, Superior-type and Taconite whereas types of Felsite are Igneous rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Banded iron formation and Felsite is white. The specific heat capacity of Banded iron formation is 3.20 kJ/Kg K and that of Felsite is 0.92 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 Felsite is heat resistant, impact resistant.