Anthracite and Porphyry Definition

Definition of Anthracite and Porphyry

The general Anthracite and Porphyry definition can be stated as: Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster. 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 Anthracite and Porphyry, get to know about Properties of Anthracite and Porphyry. Get to know more information about Anthracite and Porphyry origin and discoverer, etymology and class.

History of Anthracite and Porphyry

The history of Anthracite 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.

Anthracite and Porphyry Origin and Discoverer

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

Etymology of Anthracite and Porphyry

Along with Anthracite and Porphyry definition, know more about the etymology of Anthracite and Porphyry. Etymology of Anthracite and Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Anthracite and Formation of Porphyry. The etymology of Anthracite is From Greek anthrakites, from anthrax, anthrak meaning coal while that of Porphyry is From Greek anthrakites, from anthrax, anthrak meaning coal. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Anthracite belongs to Metamorphic Rocks while Porphyry belongs to Igneous Rocks. The sub-class, group and other categories of Anthracite and Porphyry are listed below.

For Anthracite,

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

For Porphyry,

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