Phonolite and Slate Definition

Definition of Phonolite and Slate

The general Phonolite and Slate 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, Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. Along with definition of Phonolite and Slate, get to know about Properties of Phonolite and Slate. Get to know more information about Phonolite and Slate origin and discoverer, etymology and class.

History of Phonolite and Slate

The history of Phonolite and Slate 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 Slate Origin and Discoverer

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

Etymology of Phonolite and Slate

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

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Not applicable
• Other Categories: Fine grained rock and Opaque rock