Porphyry and Schist Definition

Definition of Porphyry and Schist

The general Porphyry and Schist 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, Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation. Along with definition of Porphyry and Schist, get to know about Properties of Porphyry and Schist. Get to know more information about Porphyry and Schist origin and discoverer, etymology and class.

History of Porphyry and Schist

The history of Porphyry and Schist 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 Schist Origin and Discoverer

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

Etymology of Porphyry and Schist

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

For Porphyry,

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

For Schist,

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