Porphyry and Andesite Definition

Definition of Porphyry and Andesite

The general Porphyry and Andesite 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, Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava. Along with definition of Porphyry and Andesite, get to know about Properties of Porphyry and Andesite. Get to know more information about Porphyry and Andesite origin and discoverer, etymology and class.

History of Porphyry and Andesite

The history of Porphyry and Andesite 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 Andesite Origin and Discoverer

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

Etymology of Porphyry and Andesite

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

For Porphyry,

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

For Andesite,

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