Ijolite and Phonolite Definition

Definition of Ijolite and Phonolite

The general Ijolite and Phonolite definition can be stated as: Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite. On the other hand, Phonolite is an uncommon extrusive igneous rock volcanic rock of intermediate chemical composition between felsic and mafic. Along with definition of Ijolite and Phonolite, get to know about Properties of Ijolite and Phonolite. Get to know more information about Ijolite and Phonolite origin and discoverer, etymology and class.

History of Ijolite and Phonolite

The history of Ijolite and Phonolite 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.

Ijolite and Phonolite Origin and Discoverer

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

Etymology of Ijolite and Phonolite

Along with Ijolite and Phonolite definition, know more about the etymology of Ijolite and Phonolite. Etymology of Ijolite and Phonolite gives information about origin and formation of a particular rock. Know more about Formation of Ijolite and Formation of Phonolite. The etymology of Ijolite is From the first syllable of the Finnish words Ii-vaara, Iijoki, &c. commonly used geographical names in Finland, and the Gr. Xiflos, a stone while that of Phonolite is From the first syllable of the Finnish words Ii-vaara, Iijoki, &c. commonly used geographical names in Finland, and the Gr. Xiflos, a stone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Ijolite and Phonolite belong to Igneous Rocks. The sub-class, group and other categories of Ijolite and Phonolite are listed below.

For Ijolite,

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

For Phonolite,

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