Coal and Felsite Definition

Definition of Coal and Felsite

The general Coal and Felsite 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, Felsite is a very fine grained volcanic rock that may or may not contain larger crystals and light colored rock that typically requires petrographic examination or chemical analysis for more precise definition. Along with definition of Coal and Felsite, get to know about Properties of Coal and Felsite. Get to know more information about Coal and Felsite origin and discoverer, etymology and class.

History of Coal and Felsite

The history of Coal and Felsite 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 Felsite Origin and Discoverer

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

Etymology of Coal and Felsite

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

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