Phonolite and Borolanite Definition

Definition of Phonolite and Borolanite

The general Phonolite and Borolanite 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, Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix. Along with definition of Phonolite and Borolanite, get to know about Properties of Phonolite and Borolanite. Get to know more information about Phonolite and Borolanite origin and discoverer, etymology and class.

History of Phonolite and Borolanite

The history of Phonolite and Borolanite 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 Borolanite Origin and Discoverer

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

Etymology of Phonolite and Borolanite

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

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