Lignite and Coal Definition

Definition of Lignite and Coal

The general Lignite and Coal 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, Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds. Along with definition of Lignite and Coal, get to know about Properties of Lignite and Coal. Get to know more information about Lignite and Coal origin and discoverer, etymology and class.

History of Lignite and Coal

The history of Lignite and Coal 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 Coal Origin and Discoverer

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

Etymology of Lignite and Coal

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

For Lignite,

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

For Coal,

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