Porphyry and Norite Definition

Definition of Porphyry and Norite

The general Porphyry and Norite 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, Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine. Along with definition of Porphyry and Norite, get to know about Properties of Porphyry and Norite. Get to know more information about Porphyry and Norite origin and discoverer, etymology and class.

History of Porphyry and Norite

The history of Porphyry and Norite 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 Norite Origin and Discoverer

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

Etymology of Porphyry and Norite

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

For Porphyry,

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

For Norite,

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