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Gossan and Gneiss Definition


Gneiss and Gossan Definition


Definition

Definition
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.   
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   

History
  
  

Origin
Indonesia   
Unknown   

Discoverer
Cornish Gossen   
Unknown   

Etymology
From Cornish gossen from gos, blood from Old Cornish guit   
From the Middle High German verb gneist (to spark; so called because the rock glitters)   

Class
Metamorphic Rocks   
Metamorphic Rocks   

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

Family
  
  

Group
Not Applicable   
Not Applicable   

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

Texture >>
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Definition of Gossan and Gneiss

The general Gossan and Gneiss definition can be stated as: Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.. On the other hand, 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. Along with definition of Gossan and Gneiss, get to know about Properties of Gossan and Gneiss. Get to know more information about Gossan and Gneiss origin and discoverer, etymology and class.

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History of Gossan and Gneiss

The history of Gossan and Gneiss gives information about where the rock was found and who was its discoverer. Almost each and every aspect of Earth's history is recorded in rocks be it the volcanoes which were erupted or the plants, animals and organisms which are now extinct, as rocks are present from millions of years.

Gossan and Gneiss Origin and Discoverer

Gossan and Gneiss definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Gossan and Gneiss. In this section, you will know about Gossan and Gneiss Origin and Discoverer. Origin of Gossan is Indonesia whereas Origin of Gneiss is Unknown. It is interesting to know the name of Gossan and Gneiss discoverer. The Discoverer of Gossan is Cornish Gossen and the discoverer of Gneiss is Unknown.

Etymology of Gossan and Gneiss

Along with Gossan and Gneiss definition, know more about the etymology of Gossan and Gneiss. Etymology of Gossan and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Gossan and Formation of Gneiss. The etymology of Gossan is From Cornish gossen from gos, blood from Old Cornish guit while that of Gneiss is From Cornish gossen from gos, blood from Old Cornish guit. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Gossan and Gneiss belong to Metamorphic Rocks. The sub-class, group and other categories of Gossan and Gneiss are listed below.

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For Gneiss,

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