Rhyolite and Phonolite Definition

Definition of Rhyolite and Phonolite

The general Rhyolite and Phonolite definition can be stated as: Rhyolite is a fine-grained igneous rock which is rich in silica. On the other hand, Phonolite is an uncommon extrusive igneous rock volcanic rock of intermediate chemical composition between felsic and mafic. Along with definition of Rhyolite and Phonolite, get to know about Properties of Rhyolite and Phonolite. Get to know more information about Rhyolite and Phonolite origin and discoverer, etymology and class.

History of Rhyolite and Phonolite

The history of Rhyolite and Phonolite 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.

Rhyolite and Phonolite Origin and Discoverer

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

Etymology of Rhyolite and Phonolite

Along with Rhyolite and Phonolite definition, know more about the etymology of Rhyolite and Phonolite. Etymology of Rhyolite and Phonolite gives information about origin and formation of a particular rock. Know more about Formation of Rhyolite and Formation of Phonolite. The etymology of Rhyolite is From German Rhyolit, from Greek rhuax lava stream + lithos stone while that of Phonolite is From German Rhyolit, from Greek rhuax lava stream + lithos stone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rhyolite and Phonolite belong to Igneous Rocks. The sub-class, group and other categories of Rhyolite and Phonolite are listed below.

For Rhyolite,

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

For Phonolite,

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