Argillite and Porphyry Definition

Definition of Argillite and Porphyry

The general Argillite and Porphyry definition can be stated as: 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. On the other hand, Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix. Along with definition of Argillite and Porphyry, get to know about Properties of Argillite and Porphyry. Get to know more information about Argillite and Porphyry origin and discoverer, etymology and class.

History of Argillite and Porphyry

The history of Argillite and Porphyry 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.

Argillite and Porphyry Origin and Discoverer

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

Etymology of Argillite and Porphyry

Along with Argillite and Porphyry definition, know more about the etymology of Argillite and Porphyry. Etymology of Argillite and Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Argillite and Formation of Porphyry. The etymology of Argillite is From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite while that of Porphyry is From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Argillite belongs to Sedimentary Rocks while Porphyry belongs to Igneous Rocks. The sub-class, group and other categories of Argillite and Porphyry are listed below.

For Argillite,

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

For Porphyry,

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