Anthracite and Anorthosite Definition

Definition of Anthracite and Anorthosite

The general Anthracite and Anorthosite 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, Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase. Along with definition of Anthracite and Anorthosite, get to know about Properties of Anthracite and Anorthosite. Get to know more information about Anthracite and Anorthosite origin and discoverer, etymology and class.

History of Anthracite and Anorthosite

The history of Anthracite and Anorthosite 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 Anorthosite Origin and Discoverer

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

Etymology of Anthracite and Anorthosite

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

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Plutonic
• Other Categories: Coarse grained rock and Opaque rock