Coal and Chert Definition

Definition of Coal and Chert

The general Coal and Chert 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, Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture. Along with definition of Coal and Chert, get to know about Properties of Coal and Chert. Get to know more information about Coal and Chert origin and discoverer, etymology and class.

History of Coal and Chert

The history of Coal and Chert 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 Chert Origin and Discoverer

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

Etymology of Coal and Chert

Along with Coal and Chert definition, know more about the etymology of Coal and Chert. Etymology of Coal and Chert gives information about origin and formation of a particular rock. Know more about Formation of Coal and Formation of Chert. 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 Chert 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 Chert belong to Sedimentary Rocks. The sub-class, group and other categories of Coal and Chert 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 Chert,

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