Anthracite and Gneiss Definition

Definition of Anthracite and Gneiss

The general Anthracite and Gneiss 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, Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Along with definition of Anthracite and Gneiss, get to know about Properties of Anthracite and Gneiss. Get to know more information about Anthracite and Gneiss origin and discoverer, etymology and class.

History of Anthracite and Gneiss

The history of Anthracite and Gneiss 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 Gneiss Origin and Discoverer

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

Etymology of Anthracite and Gneiss

Along with Anthracite and Gneiss definition, know more about the etymology of Anthracite and Gneiss. Etymology of Anthracite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Anthracite and Formation of Gneiss. The etymology of Anthracite is From Greek anthrakites, from anthrax, anthrak meaning coal while that of Gneiss 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 and Gneiss belong to Metamorphic Rocks. The sub-class, group and other categories of Anthracite and Gneiss 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 Gneiss,

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