Anthracite and Greywacke Definition

Definition of Anthracite and Greywacke

The general Anthracite and Greywacke definition can be stated as: Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster. On the other hand, Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Along with definition of Anthracite and Greywacke, get to know about Properties of Anthracite and Greywacke. Get to know more information about Anthracite and Greywacke origin and discoverer, etymology and class.

History of Anthracite and Greywacke

The history of Anthracite and Greywacke 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.

Anthracite and Greywacke Origin and Discoverer

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

Etymology of Anthracite and Greywacke

Along with Anthracite and Greywacke definition, know more about the etymology of Anthracite and Greywacke. Etymology of Anthracite and Greywacke gives information about origin and formation of a particular rock. Know more about Formation of Anthracite and Formation of Greywacke. The etymology of Anthracite is From Greek anthrakites, from anthrax, anthrak meaning coal while that of Greywacke is From Greek anthrakites, from anthrax, anthrak meaning coal. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Anthracite belongs to Metamorphic Rocks while Greywacke belongs to Sedimentary Rocks. The sub-class, group and other categories of Anthracite and Greywacke are listed below.

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

For Greywacke,

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