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Essexite 
Essexite 

Banded iron formation
Banded iron formation



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Banded iron formation

Essexite  vs Banded iron formation

1 Definition
1.1 Definition
Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock
Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age
1.2 History
1.2.1 Origin
USA
Western Australia, Minnesota
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
From the locality in Essex County, Massachusetts,US
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
Plutonic
Not Applicable
1.6 Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock
2 Texture
2.1 Texture
Granular
Banded, Trellis
2.2 Color
Dark Grey to Black
Red, Reddish Brown
2.3 Maintenance
Less
Less
2.4 Durability
Durable
Durable
2.4.1 Water Resistant
81% Igneous Rocks Rocks have it !
59% Sedimentary Rocks Rocks have it !
2.4.2 Scratch Resistant
86% Igneous Rocks Rocks have it !
62% Sedimentary Rocks Rocks have it !
2.4.3 Stain Resistant
66% Igneous Rocks Rocks have it !
43% Sedimentary Rocks Rocks have it !
2.4.4 Wind Resistant
49% Igneous Rocks Rocks have it !
38% Sedimentary Rocks Rocks have it !
2.4.5 Acid Resistant
48% Igneous Rocks Rocks have it !
22% Sedimentary Rocks Rocks have it !
2.5 Appearance
Banded
Layered, Banded, Veined and Shiny
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Decorative Aggregates, Homes, Interior Decoration
Decorative Aggregates, Homes
3.1.2 Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
Paving Stone, Office Buildings
3.1.3 Other Architectural Uses
Curbing
Curbing, Whetstones
3.2 Industry
3.2.1 Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate
As Dimension Stone, Used for flooring, stair treads, borders and window sills.
3.2.2 Medical Industry
Not Yet Used
Not Yet Used
3.3 Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines
Artifacts
3.4 Other Uses
3.4.1 Commercial Uses
Cemetery Markers, Commemorative Tablets, Jewelry, Sea Defence, Tombstones
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
Is one of the oldest rock, Smooth to touch
Is one of the oldest rock
4.3 Archaeological Significance
4.3.1 Monuments
Used
Not Yet Used
4.3.2 Famous Monuments
Data Not Available
Not Applicable
4.3.3 Sculpture
Used
Not Yet Used
4.3.4 Famous Sculptures
Data Not Available
Not Applicable
4.3.5 Pictographs
Not Used
Not Used
4.3.6 Petroglyphs
Not Used
Not Used
4.3.7 Figurines
Used
Not Yet Used
4.4 Fossils
Absent
Present
5 Formation
5.1 Formation
Essexite is a type of igneous rock, which is usually dark grey to black plutonic rock. For the formation of essexite, suitable magma with exact composition of K, Ba, Rb, Cs, Sr should be produced.
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
Augite, Feldspar, Hornblende, Nepheline, Olivine, Plagioclase, Pyroxene
Hematite, Magnetite, Quartz
5.2.2 Compound Content
Aluminium Oxide, Ba, Ca, Cs, Potassium, Rb, Sodium, Sr
Fe, Iron(III) Oxide, Silicon Dioxide
5.3 Transformation
5.3.1 Metamorphism
97% Igneous Rocks Rocks have it !
19% Sedimentary Rocks Rocks have it !
5.3.2 Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism
Not Applicable
5.3.3 Weathering
99% Igneous Rocks Rocks have it !
78% Sedimentary Rocks Rocks have it !
5.3.4 Types of Weathering
Biological Weathering, Chemical Weathering
Chemical Weathering
5.3.5 Erosion
92% Igneous Rocks Rocks have it !
86% Sedimentary Rocks Rocks have it !
5.3.6 Types of Erosion
Coastal Erosion, Glacier Erosion, Water Erosion
Coastal Erosion, Wind Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
7
5.5-6
6.1.2 Grain Size
Fine Grained
Large and Coarse Grained
6.1.3 Fracture
Conchoidal
Uneven, Splintery or Conchoidal
6.1.4 Streak
Black
White
6.1.5 Porosity
Highly Porous
Highly Porous
6.1.6 Luster
Not Available
Earthy
6.1.7 Compressive Strength
Flint
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Obsidian
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6.1.8 Cleavage
Not Available
Imperfect
6.1.9 Toughness
1.6
1.5
6.1.10 Specific Gravity
Not Available
5.0-5.3
6.1.11 Transparency
Opaque
Translucent to Opaque
6.1.12 Density
Not Available
Not Available
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
Banded iron for..
Not Available
Rank: N/A (Overall)
3.20 kJ/Kg K
Rank: 1 (Overall)
Granulite
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6.2.2 Resistance
Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
India, Russia
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
Germany, Greece, Italy, Scotland, Turkey
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
7.1.4 Others
Greenland
Greenland, Mid-Atlantic Ridge
7.2 Deposits in Western Continents
7.2.1 North America
Canada, USA
Canada, Mexico, USA
7.2.2 South America
Brazil, Colombia, Venezuela
Bolivia, Brazil
7.3 Deposits in Oceania Continent
7.3.1 Australia
New Zealand, Queensland
New South Wales, Queensland, South Australia, Western Australia

Essexite  vs Banded iron formation 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 Essexite  and Banded iron formation Reserves. Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock. Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age. 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 Essexite  vs Banded iron formation information and Essexite  vs Banded iron formation characteristics in the upcoming sections.

Essexite  vs Banded iron formation 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. Essexite  vs Banded iron formation characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Essexite  and Properties of Banded iron formation. Learn more about Essexite  vs Banded iron formation in the next section. The interior uses of Essexite  include Decorative aggregates, Homes and Interior decoration whereas the interior uses of Banded iron formation include Decorative aggregates and Homes. Due to some exceptional properties of Essexite  and Banded iron formation, they have various applications in construction industry. The uses of Essexite  in construction industry include As dimension stone, Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate and that of Banded iron formation include As dimension stone, Used for flooring, stair treads, borders and window sills..

More about Essexite  and Banded iron formation

Here you can know more about Essexite  and Banded iron formation. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Essexite  and Banded iron formation consists of mineral content and compound content. The mineral content of Essexite  includes Augite, Feldspar, Hornblende, Nepheline, Olivine, Plagioclase, Pyroxene and mineral content of Banded iron formation includes Hematite, Magnetite, Quartz. You can also check out the list of all Igneous Rocks. When we have to compare Essexite  vs Banded iron formation, the texture, color and appearance plays an important role in determining the type of rock. Essexite  is available in dark grey to black colors whereas, Banded iron formation is available in red, reddish brown colors. Appearance of Essexite  is Banded and that of Banded iron formation is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Essexite  vs Banded iron formation. The hardness of Essexite  is 7 and that of Banded iron formation is 5.5-6. The types of Essexite  are Not Available whereas types of Banded iron formation are Algoma-type , Lake Superior-type, Superior-type and Taconite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Essexite  is black while that of Banded iron formation is white. The specific heat capacity of Essexite  is Not Available and that of Banded iron formation is 3.20 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Essexite  is impact resistant, pressure resistant, wear resistant whereas Banded iron formation is heat resistant, impact resistant, pressure resistant, wear resistant.