Lignite and Gneiss Definition

Definition of Lignite and Gneiss

The general Lignite and Gneiss 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, Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Along with definition of Lignite and Gneiss, get to know about Properties of Lignite and Gneiss. Get to know more information about Lignite and Gneiss origin and discoverer, etymology and class.

History of Lignite and Gneiss

The history of Lignite and Gneiss 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 Gneiss Origin and Discoverer

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

Etymology of Lignite and Gneiss

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

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