Phonolite and Schist Definition

Definition of Phonolite and Schist

The general Phonolite and Schist 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, Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation. Along with definition of Phonolite and Schist, get to know about Properties of Phonolite and Schist. Get to know more information about Phonolite and Schist origin and discoverer, etymology and class.

History of Phonolite and Schist

The history of Phonolite and Schist 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 Schist Origin and Discoverer

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

Etymology of Phonolite and Schist

Along with Phonolite and Schist definition, know more about the etymology of Phonolite and Schist. Etymology of Phonolite and Schist gives information about origin and formation of a particular rock. Know more about Formation of Phonolite and Formation of Schist. 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 Schist 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 belongs to Igneous Rocks while Schist belongs to Metamorphic Rocks. The sub-class, group and other categories of Phonolite and Schist are listed below.

For Phonolite,

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

For Schist,

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