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Nephelinite
Nephelinite

Banded iron formation
Banded iron formation



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Nephelinite vs Banded iron formation

1 Definition
1.1 Definition
Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).
Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age
1.2 History
1.2.1 Origin
Brazil
Western Australia, Minnesota
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
from French néphéline, from Greek nephelē
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
Aphanitic
Banded, Trellis
2.2 Color
Black, Brown, Colourless, Green, Grey, White
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
Skeletal
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, 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
Creating Artwork, Soil Conditioner, Source of Magnesia (MgO)
As a touchstone, Cemetery Markers, Creating Artwork
4 Types
4.1 Types
Peralkaline Nephelinite
Algoma-type , Lake Superior-type, Superior-type and Taconite
4.2 Features
Host Rock for Lead
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
Nephelinite 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.
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
Clinopyroxene, Nepheline, Plagioclase
Hematite, Magnetite, Quartz
5.2.2 Compound Content
Ca, CaO, Carbon, Cl, MgO
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
Contact 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, Mechanical 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
Chemical Erosion, Water Erosion, Wind Erosion
Coastal Erosion, Wind Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
6.5
5.5-6
6.1.2 Grain Size
Fine Grained
Large and Coarse Grained
6.1.3 Fracture
Flat
Uneven, Splintery or Conchoidal
6.1.4 Streak
White
White
6.1.5 Porosity
Less Porous
Highly Porous
6.1.6 Luster
Vitreous to Metallic
Earthy
6.1.7 Compressive Strength
Flint
35.00 N/mm2
Rank: 29 (Overall)
Not Available
Rank: N/A (Overall)
Obsidian
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6.1.8 Cleavage
Imperfect
Imperfect
6.1.9 Toughness
2.7
1.5
6.1.10 Specific Gravity
2.4-2.9
5.0-5.3
6.1.11 Transparency
Opaque
Translucent to Opaque
6.1.12 Density
2.5-3 g/cm3
Not Available
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
Banded iron for..
0.88 kJ/Kg K
Rank: 13 (Overall)
3.20 kJ/Kg K
Rank: 1 (Overall)
Granulite
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6.2.2 Resistance
Heat Resistant
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
Japan
China, India, Iran, Iraq, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
7.1.2 Africa
Rwanda, Tanzania
Kenya, Morocco, South Africa, Tanzania
7.1.3 Europe
Not Yet Found
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
7.1.4 Others
Hawaii Islands
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
Colombia
Bolivia, Brazil
7.3 Deposits in Oceania Continent
7.3.1 Australia
Not Yet Found
New South Wales, Queensland, South Australia, Western Australia

Nephelinite 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 Nephelinite and Banded iron formation Reserves. Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).. 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 Nephelinite vs Banded iron formation information and Nephelinite vs Banded iron formation characteristics in the upcoming sections.

Nephelinite 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. Nephelinite vs Banded iron formation characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Nephelinite and Properties of Banded iron formation. Learn more about Nephelinite vs Banded iron formation in the next section. The interior uses of Nephelinite 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 Nephelinite and Banded iron formation, they have various applications in construction industry. The uses of Nephelinite in construction industry include As dimension stone, 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 Nephelinite and Banded iron formation

Here you can know more about Nephelinite 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 Nephelinite and Banded iron formation consists of mineral content and compound content. The mineral content of Nephelinite includes Clinopyroxene, Nepheline, Plagioclase 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 Nephelinite vs Banded iron formation, the texture, color and appearance plays an important role in determining the type of rock. Nephelinite is available in black, brown, colourless, green, grey, white colors whereas, Banded iron formation is available in red, reddish brown colors. Appearance of Nephelinite is Skeletal and that of Banded iron formation is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Nephelinite vs Banded iron formation. The hardness of Nephelinite is 6.5 and that of Banded iron formation is 5.5-6. The types of Nephelinite are Peralkaline Nephelinite 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 Nephelinite and Banded iron formation is white. The specific heat capacity of Nephelinite is 0.88 kJ/Kg K 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.Nephelinite is heat resistant whereas Banded iron formation is heat resistant, impact resistant, pressure resistant, wear resistant.