Coal and Claystone Definition

Definition of Coal and Claystone

The general Coal and Claystone definition can be stated as: Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds. On the other hand, Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay. Along with definition of Coal and Claystone, get to know about Properties of Coal and Claystone. Get to know more information about Coal and Claystone origin and discoverer, etymology and class.

History of Coal and Claystone

The history of Coal and Claystone 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.

Coal and Claystone Origin and Discoverer

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

Etymology of Coal and Claystone

Along with Coal and Claystone definition, know more about the etymology of Coal and Claystone. Etymology of Coal and Claystone gives information about origin and formation of a particular rock. Know more about Formation of Coal and Formation of Claystone. The etymology of Coal is From the Old English term col, which has meant mineral of fossilized carbon since the 13th century while that of Claystone is From the Old English term col, which has meant mineral of fossilized carbon since the 13th century. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Coal and Claystone belong to Sedimentary Rocks. The sub-class, group and other categories of Coal and Claystone are listed below.

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

For Claystone,

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