Porphyry and Argillite Definition

Definition of Porphyry and Argillite

The general Porphyry and Argillite 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, Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate. Along with definition of Porphyry and Argillite, get to know about Properties of Porphyry and Argillite. Get to know more information about Porphyry and Argillite origin and discoverer, etymology and class.

History of Porphyry and Argillite

The history of Porphyry and Argillite 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 Argillite Origin and Discoverer

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

Etymology of Porphyry and Argillite

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

For Porphyry,

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

For Argillite,

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