Anthracite and Chalk Definition

Definition of Anthracite and Chalk

The general Anthracite and Chalk 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, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Anthracite and Chalk, get to know about Properties of Anthracite and Chalk. Get to know more information about Anthracite and Chalk origin and discoverer, etymology and class.

History of Anthracite and Chalk

The history of Anthracite and Chalk 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 Chalk Origin and Discoverer

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

Etymology of Anthracite and Chalk

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

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