Phonolite and Ijolite Definition

Definition of Phonolite and Ijolite

The general Phonolite and Ijolite 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, Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite. Along with definition of Phonolite and Ijolite, get to know about Properties of Phonolite and Ijolite. Get to know more information about Phonolite and Ijolite origin and discoverer, etymology and class.

History of Phonolite and Ijolite

The history of Phonolite and Ijolite 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 Ijolite Origin and Discoverer

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

Etymology of Phonolite and Ijolite

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

For Phonolite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group:
• Other Categories: Fine grained rock and Opaque rock

For Ijolite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Plutonic
• Other Categories: Coarse grained rock and Opaque rock