Greywacke and Anthracite Definition

Definition of Greywacke and Anthracite

The general Greywacke and Anthracite 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, Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster. Along with definition of Greywacke and Anthracite, get to know about Properties of Greywacke and Anthracite. Get to know more information about Greywacke and Anthracite origin and discoverer, etymology and class.

History of Greywacke and Anthracite

The history of Greywacke and Anthracite 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 Anthracite Origin and Discoverer

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

Etymology of Greywacke and Anthracite

Along with Greywacke and Anthracite definition, know more about the etymology of Greywacke and Anthracite. Etymology of Greywacke and Anthracite gives information about origin and formation of a particular rock. Know more about Formation of Greywacke and Formation of Anthracite. The etymology of Greywacke is From German Grauwacke, from grau grey + wacke while that of Anthracite 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 belongs to Sedimentary Rocks while Anthracite belongs to Metamorphic Rocks. The sub-class, group and other categories of Greywacke and Anthracite are listed below.

For Greywacke,

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

For Anthracite,

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