Coal and Phonolite Definition

Definition of Coal and Phonolite

The general Coal and Phonolite 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, Phonolite is an uncommon extrusive igneous rock volcanic rock of intermediate chemical composition between felsic and mafic. Along with definition of Coal and Phonolite, get to know about Properties of Coal and Phonolite. Get to know more information about Coal and Phonolite origin and discoverer, etymology and class.

History of Coal and Phonolite

The history of Coal and Phonolite 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 Phonolite Origin and Discoverer

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

Etymology of Coal and Phonolite

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

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