Phonolite and Andesite Definition

Definition of Phonolite and Andesite

The general Phonolite and Andesite 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, Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava. Along with definition of Phonolite and Andesite, get to know about Properties of Phonolite and Andesite. Get to know more information about Phonolite and Andesite origin and discoverer, etymology and class.

History of Phonolite and Andesite

The history of Phonolite and Andesite 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 Andesite Origin and Discoverer

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

Etymology of Phonolite and Andesite

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

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