Arkose and Porphyry Definition

Definition of Arkose and Porphyry

The general Arkose and Porphyry definition can be stated as: Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar. On the other hand, Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix. Along with definition of Arkose and Porphyry, get to know about Properties of Arkose and Porphyry. Get to know more information about Arkose and Porphyry origin and discoverer, etymology and class.

History of Arkose and Porphyry

The history of Arkose and Porphyry 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.

Arkose and Porphyry Origin and Discoverer

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

Etymology of Arkose and Porphyry

Along with Arkose and Porphyry definition, know more about the etymology of Arkose and Porphyry. Etymology of Arkose and Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Arkose and Formation of Porphyry. The etymology of Arkose is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones while that of Porphyry is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Arkose belongs to Sedimentary Rocks while Porphyry belongs to Igneous Rocks. The sub-class, group and other categories of Arkose and Porphyry are listed below.

For Arkose,

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

For Porphyry,

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