Nephelinite and Coal Definition

Definition of Nephelinite and Coal

The general Nephelinite and Coal definition can be stated as: Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).. 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 Nephelinite and Coal, get to know about Properties of Nephelinite and Coal. Get to know more information about Nephelinite and Coal origin and discoverer, etymology and class.

History of Nephelinite and Coal

The history of Nephelinite 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.

Nephelinite and Coal Origin and Discoverer

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

Etymology of Nephelinite and Coal

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

For Nephelinite,

• Sub-class: Durable Rock and Hard Rock
• Group: Plutonic
• Other Categories: Fine grained rock and Opaque rock

For Coal,

• Sub-class: Durable Rock and Soft Rock
• Group:
• Other Categories: Coarse grained rock, Fine grained rock, Medium grained rock and Opaque rock