Porphyry and Amphibolite Definition

Definition of Porphyry and Amphibolite

The general Porphyry and Amphibolite 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, Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase. Along with definition of Porphyry and Amphibolite, get to know about Properties of Porphyry and Amphibolite. Get to know more information about Porphyry and Amphibolite origin and discoverer, etymology and class.

History of Porphyry and Amphibolite

The history of Porphyry and Amphibolite 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 Amphibolite Origin and Discoverer

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

Etymology of Porphyry and Amphibolite

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

For Porphyry,

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

For Amphibolite,

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