Greywacke and Lignite Definition

Definition of Greywacke and Lignite

The general Greywacke and Lignite definition can be stated as: Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. On the other hand, Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat. Along with definition of Greywacke and Lignite, get to know about Properties of Greywacke and Lignite. Get to know more information about Greywacke and Lignite origin and discoverer, etymology and class.

History of Greywacke and Lignite

The history of Greywacke and Lignite 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.

Greywacke and Lignite Origin and Discoverer

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

Etymology of Greywacke and Lignite

Along with Greywacke and Lignite definition, know more about the etymology of Greywacke and Lignite. Etymology of Greywacke and Lignite gives information about origin and formation of a particular rock. Know more about Formation of Greywacke and Formation of Lignite. The etymology of Greywacke is From German Grauwacke, from grau grey + wacke while that of Lignite is From German Grauwacke, from grau grey + wacke. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Greywacke and Lignite belong to Sedimentary Rocks. The sub-class, group and other categories of Greywacke and Lignite are listed below.

For Greywacke,

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

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