Phonolite and Essexite  Definition

Definition of Phonolite and Essexite 

The general Phonolite and Essexite  definition can be stated as: Phonolite is an uncommon extrusive igneous rock volcanic rock of intermediate chemical composition between felsic and mafic. On the other hand, Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock. Along with definition of Phonolite and Essexite , get to know about Properties of Phonolite and Essexite . Get to know more information about Phonolite and Essexite  origin and discoverer, etymology and class.

History of Phonolite and Essexite 

The history of Phonolite and Essexite  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.

Phonolite and Essexite  Origin and Discoverer

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

Etymology of Phonolite and Essexite 

Along with Phonolite and Essexite  definition, know more about the etymology of Phonolite and Essexite . Etymology of Phonolite and Essexite  gives information about origin and formation of a particular rock. Know more about Formation of Phonolite and Formation of Essexite . The etymology of Phonolite is From the Greek meaning sounding stone because of the metallic sound it produces if an unfractured plate is hit while that of Essexite  is From the Greek meaning sounding stone because of the metallic sound it produces if an unfractured plate is hit. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Phonolite and Essexite  belong to Igneous Rocks. The sub-class, group and other categories of Phonolite and Essexite  are listed below.

For Phonolite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Not applicable
• Other Categories: Fine grained rock and Opaque rock

For Essexite ,

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