Phonolite and Shoshonite Definition

Definition of Phonolite and Shoshonite

The general Phonolite and Shoshonite 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, Shoshonite is a basaltic rock, properly a potassic trachyandesite, composed of olivine, augite and plagioclase phenocrysts in a groundmass with calcic plagioclase and sanidine and some dark-colored volcanic glass. Along with definition of Phonolite and Shoshonite, get to know about Properties of Phonolite and Shoshonite. Get to know more information about Phonolite and Shoshonite origin and discoverer, etymology and class.

History of Phonolite and Shoshonite

The history of Phonolite and Shoshonite 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 Shoshonite Origin and Discoverer

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

Etymology of Phonolite and Shoshonite

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

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