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Gneiss and Rhomb Porphyry Definition


Rhomb Porphyry and Gneiss Definition


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   
Rhomb-porphyry is a porphyritic igneous rock with abundant wedge or lens shaped anorthoclase or feldspar phenocrysts   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From the Middle High German verb gneist (to spark; so called because the rock glitters)   
From Latin term that means purple   

Class
Metamorphic Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Volcanic   

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

Texture >>
<< Summary

Definition of Gneiss and Rhomb Porphyry

The general Gneiss and Rhomb Porphyry definition can be stated as: 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. On the other hand, Rhomb-porphyry is a porphyritic igneous rock with abundant wedge or lens shaped anorthoclase or feldspar phenocrysts. Along with definition of Gneiss and Rhomb Porphyry, get to know about Properties of Gneiss and Rhomb Porphyry. Get to know more information about Gneiss and Rhomb Porphyry origin and discoverer, etymology and class.

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History of Gneiss and Rhomb Porphyry

The history of Gneiss and Rhomb Porphyry 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.

Gneiss and Rhomb Porphyry Origin and Discoverer

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

Etymology of Gneiss and Rhomb Porphyry

Along with Gneiss and Rhomb Porphyry definition, know more about the etymology of Gneiss and Rhomb Porphyry. Etymology of Gneiss and Rhomb Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Gneiss and Formation of Rhomb Porphyry. The etymology of Gneiss is From the Middle High German verb gneist (to spark; so called because the rock glitters) while that of Rhomb Porphyry is From the Middle High German verb gneist (to spark; so called because the rock glitters). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Gneiss belongs to Metamorphic Rocks while Rhomb Porphyry belongs to Igneous Rocks. The sub-class, group and other categories of Gneiss and Rhomb Porphyry are listed below.

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