Nephelinite and Lignite Definition

Definition of Nephelinite and Lignite

The general Nephelinite and Lignite 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, Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat. Along with definition of Nephelinite and Lignite, get to know about Properties of Nephelinite and Lignite. Get to know more information about Nephelinite and Lignite origin and discoverer, etymology and class.

History of Nephelinite and Lignite

The history of Nephelinite and Lignite 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 Lignite Origin and Discoverer

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

Etymology of Nephelinite and Lignite

Along with Nephelinite and Lignite definition, know more about the etymology of Nephelinite and Lignite. Etymology of Nephelinite and Lignite gives information about origin and formation of a particular rock. Know more about Formation of Nephelinite and Formation of Lignite. The etymology of Nephelinite is from French néphéline, from Greek nephelē while that of Lignite 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 Lignite belongs to Sedimentary Rocks. The sub-class, group and other categories of Nephelinite and Lignite are listed below.

For Nephelinite,

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

For Lignite,

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