Lignite and Pegmatite Definition

Definition of Lignite and Pegmatite

The general Lignite and Pegmatite 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, Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. Along with definition of Lignite and Pegmatite, get to know about Properties of Lignite and Pegmatite. Get to know more information about Lignite and Pegmatite origin and discoverer, etymology and class.

History of Lignite and Pegmatite

The history of Lignite and Pegmatite 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 Pegmatite Origin and Discoverer

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

Etymology of Lignite and Pegmatite

Along with Lignite and Pegmatite definition, know more about the etymology of Lignite and Pegmatite. Etymology of Lignite and Pegmatite gives information about origin and formation of a particular rock. Know more about Formation of Lignite and Formation of Pegmatite. The etymology of Lignite is From French, Latin lignum wood + -ite1 while that of Pegmatite 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 Pegmatite belongs to Igneous Rocks. The sub-class, group and other categories of Lignite and Pegmatite 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 Pegmatite,

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