Pumice and Coal Definition

Definition of Pumice and Coal

The general Pumice and Coal definition can be stated as: Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. On the other hand, Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds. Along with definition of Pumice and Coal, get to know about Properties of Pumice and Coal. Get to know more information about Pumice and Coal origin and discoverer, etymology and class.

History of Pumice and Coal

The history of Pumice and Coal 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.

Pumice and Coal Origin and Discoverer

Pumice and Coal definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Pumice and Coal. In this section, you will know about Pumice and Coal Origin and Discoverer. Origin of Pumice is Spain whereas Origin of Coal is USA. It is interesting to know the name of Pumice and Coal discoverer. The Discoverer of Pumice is Unknown and the discoverer of Coal is John Peter Salley.

Etymology of Pumice and Coal

Along with Pumice and Coal definition, know more about the etymology of Pumice and Coal. Etymology of Pumice and Coal gives information about origin and formation of a particular rock. Know more about Formation of Pumice and Formation of Coal. The etymology of Pumice is From Old French pomis, from a Latin dialect variant of pumex while that of Coal is From Old French pomis, from a Latin dialect variant of pumex. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Pumice belongs to Igneous Rocks while Coal belongs to Sedimentary Rocks. The sub-class, group and other categories of Pumice and Coal are listed below.

For Pumice,

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

For Coal,

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