Phonolite and Nephelinite Definition

Definition of Phonolite and Nephelinite

The general Phonolite and Nephelinite 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, Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).. Along with definition of Phonolite and Nephelinite, get to know about Properties of Phonolite and Nephelinite. Get to know more information about Phonolite and Nephelinite origin and discoverer, etymology and class.

History of Phonolite and Nephelinite

The history of Phonolite and Nephelinite 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 Nephelinite Origin and Discoverer

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

Etymology of Phonolite and Nephelinite

Along with Phonolite and Nephelinite definition, know more about the etymology of Phonolite and Nephelinite. Etymology of Phonolite and Nephelinite gives information about origin and formation of a particular rock. Know more about Formation of Phonolite and Formation of Nephelinite. 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 Nephelinite 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 Nephelinite belong to Igneous Rocks. The sub-class, group and other categories of Phonolite and Nephelinite 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 Nephelinite,

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