Porphyry and Anthracite Definition

Definition of Porphyry and Anthracite

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

History of Porphyry and Anthracite

The history of Porphyry and Anthracite 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 Anthracite Origin and Discoverer

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

Etymology of Porphyry and Anthracite

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

For Porphyry,

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

For Anthracite,

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