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Essexite 
Essexite 

Porphyry
Porphyry



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Essexite  and Porphyry Definition

1 Definition
1.1 Definition
Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock
Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix
1.2 History
1.2.1 Origin
USA
Egypt
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
From the locality in Essex County, Massachusetts,US
From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites
1.4 Class
Igneous Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
1.5 Family
1.5.1 Group
Plutonic
Plutonic
1.6 Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock

Definition of Essexite  and Porphyry

The general Essexite  and Porphyry definition can be stated as: Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock. 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 Essexite  and Porphyry, get to know about Properties of Essexite  and Porphyry. Get to know more information about Essexite  and Porphyry origin and discoverer, etymology and class.

History of Essexite  and Porphyry

The history of Essexite  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.

Essexite  and Porphyry Origin and Discoverer

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

Etymology of Essexite  and Porphyry

Along with Essexite  and Porphyry definition, know more about the etymology of Essexite  and Porphyry. Etymology of Essexite  and Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Essexite  and Formation of Porphyry. The etymology of Essexite  is From the locality in Essex County, Massachusetts,US while that of Porphyry is From the locality in Essex County, Massachusetts,US. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Essexite  and Porphyry belong to Igneous Rocks. The sub-class, group and other categories of Essexite  and Porphyry are listed below.

For Essexite ,

  • Sub-class: Durable Rock and Hard Rock
  • Group: Plutonic
  • Other Categories: Fine grained rock and Opaque rock

For Porphyry,

  • Sub-class: Durable Rock and Hard Rock
  • Group: Plutonic
  • Other Categories: Fine grained rock and Opaque rock