Lignite and Argillite Definition

Definition of Lignite and Argillite

The general Lignite and Argillite 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, Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate. Along with definition of Lignite and Argillite, get to know about Properties of Lignite and Argillite. Get to know more information about Lignite and Argillite origin and discoverer, etymology and class.

History of Lignite and Argillite

The history of Lignite and Argillite 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 Argillite Origin and Discoverer

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

Etymology of Lignite and Argillite

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

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