Andesite and Anthracite Definition

Definition of Andesite and Anthracite

The general Andesite and Anthracite definition can be stated as: Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava. 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 Andesite and Anthracite, get to know about Properties of Andesite and Anthracite. Get to know more information about Andesite and Anthracite origin and discoverer, etymology and class.

History of Andesite and Anthracite

The history of Andesite 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.

Andesite and Anthracite Origin and Discoverer

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

Etymology of Andesite and Anthracite

Along with Andesite and Anthracite definition, know more about the etymology of Andesite and Anthracite. Etymology of Andesite and Anthracite gives information about origin and formation of a particular rock. Know more about Formation of Andesite and Formation of Anthracite. The etymology of Andesite is From Andes mountains, where it is found in abundance while that of Anthracite is From Andes mountains, where it is found in abundance. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Andesite belongs to Igneous Rocks while Anthracite belongs to Metamorphic Rocks. The sub-class, group and other categories of Andesite and Anthracite are listed below.

For Andesite,

• Sub-class: Durable Rock and Hard Rock
• Group: Volcanic
• Other Categories: Fine grained rock and Opaque rock

For Anthracite,

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