Phonolite and Troctolite Definition

Definition of Phonolite and Troctolite

The general Phonolite and Troctolite 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, Troctolite is a mafic intrusive rock type. It consists essentially of major but variable amounts of olivine and calcic plagioclase along with minor pyroxene. It is an olivine-rich anorthosite, or a pyroxene-depleted relative of gabbro. Along with definition of Phonolite and Troctolite, get to know about Properties of Phonolite and Troctolite. Get to know more information about Phonolite and Troctolite origin and discoverer, etymology and class.

History of Phonolite and Troctolite

The history of Phonolite and Troctolite 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 Troctolite Origin and Discoverer

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

Etymology of Phonolite and Troctolite

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

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