Lignite and Porphyry Definition

Definition of Lignite and Porphyry

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

History of Lignite and Porphyry

The history of Lignite 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.

Lignite and Porphyry Origin and Discoverer

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

Etymology of Lignite and Porphyry

Along with Lignite and Porphyry definition, know more about the etymology of Lignite and Porphyry. Etymology of Lignite and Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Lignite and Formation of Porphyry. The etymology of Lignite is From French, Latin lignum wood + -ite1 while that of Porphyry is From French, Latin lignum wood + -ite1. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Lignite belongs to Sedimentary Rocks while Porphyry belongs to Igneous Rocks. The sub-class, group and other categories of Lignite and Porphyry are listed below.

For Lignite,

• Sub-class: Durable Rock and Soft Rock
• Group: Not applicable
• 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