Porphyry and Rhyolite Definition

Definition of Porphyry and Rhyolite

The general Porphyry and Rhyolite definition can be stated as: Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix. On the other hand, Rhyolite is a fine-grained igneous rock which is rich in silica. Along with definition of Porphyry and Rhyolite, get to know about Properties of Porphyry and Rhyolite. Get to know more information about Porphyry and Rhyolite origin and discoverer, etymology and class.

History of Porphyry and Rhyolite

The history of Porphyry and Rhyolite 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.

Porphyry and Rhyolite Origin and Discoverer

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

Etymology of Porphyry and Rhyolite

Along with Porphyry and Rhyolite definition, know more about the etymology of Porphyry and Rhyolite. Etymology of Porphyry and Rhyolite gives information about origin and formation of a particular rock. Know more about Formation of Porphyry and Formation of Rhyolite. The etymology of Porphyry is From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites while that of Rhyolite is From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Porphyry and Rhyolite belong to Igneous Rocks. The sub-class, group and other categories of Porphyry and Rhyolite are listed below.

For Porphyry,

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

For Rhyolite,

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