Porphyry and Lignite Definition

Definition of Porphyry and Lignite

The general Porphyry and Lignite 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, Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat. Along with definition of Porphyry and Lignite, get to know about Properties of Porphyry and Lignite. Get to know more information about Porphyry and Lignite origin and discoverer, etymology and class.

History of Porphyry and Lignite

The history of Porphyry and Lignite 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 Lignite Origin and Discoverer

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

Etymology of Porphyry and Lignite

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

For Porphyry,

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

For Lignite,

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