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Gneiss vs Jasperoid


Jasperoid vs Gneiss


Definition

Definition
Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks  
Jasperoid is a rare, peculiar type of metasomatic alteration of rocks  

History
  
  

Origin
-  
USA  

Discoverer
Unknown  
Unknown  

Etymology
From the Middle High German verb gneist (to spark; so called because the rock glitters)  
From silica, the main mineral content of Jasperoid  

Class
Metamorphic Rocks  
Sedimentary Rocks  

Sub-Class
Durable Rock, Hard Rock  
Durable Rock, Medium Hardness Rock  

Family
  
  

Group
-  
-  

Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock  
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock  

Texture

Texture
Banded, Foliated, Platy  
Earthy  

Color
Black, Brown, Pink, Red, White  
Black, Brown, Green, Grey, Pink, White  

Maintenance
More  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
Yes  
Yes  

Wind Resistant
Yes  
No  

Acid Resistant
No  
No  

Appearance
Foliated  
Glassy or Pearly  

Uses

Architecture
  
  

Interior Uses
Countertops, Decorative Aggregates, Flooring, Interior Decoration  
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration  

Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone  
As Building Stone, Garden Decoration, Office Buildings, Paving Stone  

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
As Dimension Stone  
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics, Serves as an Oil and Gas Reservoir rock  

Medical Industry
-  
Taken as a Supplement for Calcium or Magnesium  

Antiquity Uses
Artifacts  
Artifacts, Jewellery, Monuments, Sculpture  

Other Uses
  
  

Commercial Uses
Cemetery Markers, Jewelry, Tombstones, Used in aquariums  
An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)  

Types

Types
Augen Gneiss, Henderson Gneiss, Lewisian Gneiss, Archean and Proterozoic Gneiss.  
-  

Features
Generally rough to touch, Is one of the oldest rock  
Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
Konark Sun Temple in India, Washington Monument, US  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Present  

Formation

Formation
Gneiss is a high grade metamorphic rock i.e. it has been subjected to higher temperatures and pressures than schist. It is formed by the metamorphosis of Gneiss forms from volcanic rock, shale or granitie.   
Jasperoid is a rare and peculiar type of metasomatic alteration of rocks. It is formed by extreme alteration of wall rocks within a shear zone which may occur in sediments, andesites, trachytes and basalts.  

Composition
  
  

Mineral Content
Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon  
Clay Minerals, Pyrite, Quartz, Sulfides  

Compound Content
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide  
NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO  

Transformation
  
  

Metamorphism
Yes  
Yes  

Types of Metamorphism
Impact Metamorphism  
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism  

Weathering
Yes  
No  

Types of Weathering
Biological Weathering, Mechanical Weathering  
-  

Erosion
Yes  
No  

Types of Erosion
Chemical Erosion, Coastal Erosion, Sea Erosion  
-  

Properties

Physical Properties
  
  

Hardness
7  
3.5-4  

Grain Size
Medium to Coarse Grained  
Medium to Fine Coarse Grained  

Fracture
Irregular  
Conchoidal  

Streak
White  
White  

Porosity
Very Less Porous  
Less Porous  

Luster
Dull  
Vitreous and Pearly  

Compressive Strength
125.00 N/mm2  
25
140.00 N/mm2  
23

Cleavage
-  
Perfect  

Toughness
1.2  
1  

Specific Gravity
2.5-2.7  
2.8-3  

Transparency
Translucent to Opaque  
Transparent to Translucent  

Density
2.6-2.9 g/cm3  
2.8-2.9 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.70 kJ/Kg K  
24
0.92 kJ/Kg K  
10

Resistance
Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant  
Heat Resistant, Pressure Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Iran, Iraq, Kazakhstan, Kyrgyzstan, Mongolia, Russia  
China, India  

Africa
Cameroon, Ethiopia, Ghana, Kenya, Madagascar, Morocco, Mozambique, Namibia, Nigeria, Tanzania, Togo  
Morocco, Namibia  

Europe
Albania, Austria, Bosnia and Herzegovina, Finland, France, Georgia, Germany, Hungary, Italy, Kosovo, Monaco, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, Switzerland, Ukraine, United Kingdom  
Austria, Italy, Romania, Spain, Switzerland  

Others
-  
-  

Deposits in Western Continents
  
  

North America
Canada, Costa Rica, Cuba, Mexico, Panama, USA  
Mexico, USA  

South America
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru, Venezuela  
Brazil, Colombia  

Deposits in Oceania Continent
  
  

Australia
New South Wales, New Zealand, Queensland, Victoria  
New South Wales, Queensland, Yorke Peninsula  

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Gneiss vs Jasperoid 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 Gneiss and Jasperoid Reserves. Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Jasperoid is a rare, peculiar type of metasomatic alteration of rocks. 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 Gneiss vs Jasperoid information and Gneiss vs Jasperoid characteristics in the upcoming sections.

Compare Metamorphic Rocks

Gneiss vs Jasperoid 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. Gneiss vs Jasperoid characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Gneiss and Properties of Jasperoid. Learn more about Gneiss vs Jasperoid in the next section. The interior uses of Gneiss include Countertops, Decorative aggregates, Flooring and Interior decoration whereas the interior uses of Jasperoid include Decorative aggregates, Floor tiles, Homes and Interior decoration. Due to some exceptional properties of Gneiss and Jasperoid, they have various applications in construction industry. The uses of Gneiss in construction industry include As dimension stone and that of Jasperoid include As a flux in the production of steel and pig iron, As a sintering agent in steel industry to process iron ore, As dimension stone, Cement manufacture, For road aggregate, Making natural cement, Manufacture of magnesium and dolomite refractories, Production of glass and ceramics, Serves as an oil and gas reservoir rock.

More about Gneiss and Jasperoid

Here you can know more about Gneiss and Jasperoid. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Gneiss and Jasperoid consists of mineral content and compound content. The mineral content of Gneiss includes Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon and mineral content of Jasperoid includes Clay Minerals, Pyrite, Quartz, Sulfides. You can also check out the list of all Metamorphic Rocks. When we have to compare Gneiss vs Jasperoid, the texture, color and appearance plays an important role in determining the type of rock. Gneiss is available in black, brown, pink, red, white colors whereas, Jasperoid is available in black, brown, green, grey, pink, white colors. Appearance of Gneiss is Foliated and that of Jasperoid is Glassy or Pearly. Properties of rock is another aspect for Gneiss vs Jasperoid. The hardness of Gneiss is 7 and that of Jasperoid is 3.5-4. The types of Gneiss are Augen Gneiss, Henderson Gneiss, Lewisian Gneiss, Archean and Proterozoic Gneiss. whereas types of Jasperoid are -. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Gneiss and Jasperoid is white. The specific heat capacity of Gneiss is 0.70 kJ/Kg K and that of Jasperoid 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.Gneiss is heat resistant, pressure resistant, scratch resistant, wear resistant whereas Jasperoid is heat resistant, pressure resistant, wear resistant.

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