Porphyry and Arkose Definition

Definition of Porphyry and Arkose

The general Porphyry and Arkose 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, Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar. Along with definition of Porphyry and Arkose, get to know about Properties of Porphyry and Arkose. Get to know more information about Porphyry and Arkose origin and discoverer, etymology and class.

History of Porphyry and Arkose

The history of Porphyry and Arkose 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 Arkose Origin and Discoverer

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

Etymology of Porphyry and Arkose

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

For Porphyry,

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

For Arkose,

• Sub-class: Durable Rock and Hard Rock
• Group: Not applicable
• Other Categories: Coarse grained rock and Opaque rock