Porphyry and Anorthosite Definition

Definition of Porphyry and Anorthosite

The general Porphyry and Anorthosite 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, Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase. Along with definition of Porphyry and Anorthosite, get to know about Properties of Porphyry and Anorthosite. Get to know more information about Porphyry and Anorthosite origin and discoverer, etymology and class.

History of Porphyry and Anorthosite

The history of Porphyry and Anorthosite 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 Anorthosite Origin and Discoverer

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

Etymology of Porphyry and Anorthosite

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

For Porphyry,

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

For Anorthosite,

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