Anthracite and Appinite Definition

Definition of Anthracite and Appinite

The general Anthracite and Appinite 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, Appinite is an igneous rock in which the crystals are so fine grained that individual minerals cannot be easily distinguished. Along with definition of Anthracite and Appinite, get to know about Properties of Anthracite and Appinite. Get to know more information about Anthracite and Appinite origin and discoverer, etymology and class.

History of Anthracite and Appinite

The history of Anthracite and Appinite 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 Appinite Origin and Discoverer

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

Etymology of Anthracite and Appinite

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

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