Phonolite and Theralite Definition

Definition of Phonolite and Theralite

The general Phonolite and Theralite 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, Theralite is a plutonic hylocrystalline igneous rock consisting of augite, olivine, calcic plagioclase and nepheline. Along with definition of Phonolite and Theralite, get to know about Properties of Phonolite and Theralite. Get to know more information about Phonolite and Theralite origin and discoverer, etymology and class.

History of Phonolite and Theralite

The history of Phonolite and Theralite 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 Theralite Origin and Discoverer

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

Etymology of Phonolite and Theralite

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

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