Lignite and Chalk Definition

Definition of Lignite and Chalk

The general Lignite and Chalk 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, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Lignite and Chalk, get to know about Properties of Lignite and Chalk. Get to know more information about Lignite and Chalk origin and discoverer, etymology and class.

History of Lignite and Chalk

The history of Lignite and Chalk 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 Chalk Origin and Discoverer

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

Etymology of Lignite and Chalk

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

• Sub-class: Durable Rock and Soft Rock
• Group: Not applicable
• Other Categories: Fine grained rock and Opaque rock