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Litchfieldite and Porphyry Definition


Porphyry and Litchfieldite Definition


Definition

Definition
Litchfieldite is a rare igneous rock which is coarse-grained, foliated and a variety of nepheline syenite, sometimes also called as nepheline syenite gneiss or gneissic nepeheline syenite   
Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix   

History
  
  

Origin
USA   
Egypt   

Discoverer
Bayley   
Unknown   

Etymology
From its occurrence at Litchfield, Maine, USA   
From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Plutonic   
Plutonic   

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

Texture >>
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Definition of Litchfieldite and Porphyry

The general Litchfieldite and Porphyry definition can be stated as: Litchfieldite is a rare igneous rock which is coarse-grained, foliated and a variety of nepheline syenite, sometimes also called as nepheline syenite gneiss or gneissic nepeheline syenite. On the other hand, Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix. Along with definition of Litchfieldite and Porphyry, get to know about Properties of Litchfieldite and Porphyry. Get to know more information about Litchfieldite and Porphyry origin and discoverer, etymology and class.

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History of Litchfieldite and Porphyry

The history of Litchfieldite and 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.

Litchfieldite and Porphyry Origin and Discoverer

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

Etymology of Litchfieldite and Porphyry

Along with Litchfieldite and Porphyry definition, know more about the etymology of Litchfieldite and Porphyry. Etymology of Litchfieldite and Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Litchfieldite and Formation of Porphyry. The etymology of Litchfieldite is From its occurrence at Litchfield, Maine, USA while that of Porphyry is From its occurrence at Litchfield, Maine, USA. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Litchfieldite and Porphyry belong to Igneous Rocks. The sub-class, group and other categories of Litchfieldite and Porphyry are listed below.

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