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Adamellite and Gneiss Definition


Gneiss and Adamellite Definition


Definition

Definition
Adamellite is a coarse-grained porphyritic igneous rock, a variety of Monzogranite and dominated by phenocrysts of orthoclase in a granular groundmass of perthite, plagioclase and quartz   
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
Italy   
Unknown   

Discoverer
Unknown   
Unknown   

Etymology
From German adamellit and from Monte Adamello, a mountain in Italy, its locality   
From the Middle High German verb gneist (to spark; so called because the rock glitters)   

Class
Igneous Rocks   
Metamorphic Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Plutonic   
Not Applicable   

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

Texture >>
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Definition of Adamellite and Gneiss

The general Adamellite and Gneiss definition can be stated as: Adamellite is a coarse-grained porphyritic igneous rock, a variety of Monzogranite and dominated by phenocrysts of orthoclase in a granular groundmass of perthite, plagioclase and quartz. 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 Adamellite and Gneiss, get to know about Properties of Adamellite and Gneiss. Get to know more information about Adamellite and Gneiss origin and discoverer, etymology and class.

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History of Adamellite and Gneiss

The history of Adamellite 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.

Adamellite and Gneiss Origin and Discoverer

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

Etymology of Adamellite and Gneiss

Along with Adamellite and Gneiss definition, know more about the etymology of Adamellite and Gneiss. Etymology of Adamellite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Adamellite and Formation of Gneiss. The etymology of Adamellite is From German adamellit and from Monte Adamello, a mountain in Italy, its locality while that of Gneiss is From German adamellit and from Monte Adamello, a mountain in Italy, its locality. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Adamellite belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Adamellite and Gneiss are listed below.

For Adamellite,

For Gneiss,

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