Nephelinite and Greywacke Definition

Definition of Nephelinite and Greywacke

The general Nephelinite and Greywacke 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, Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Along with definition of Nephelinite and Greywacke, get to know about Properties of Nephelinite and Greywacke. Get to know more information about Nephelinite and Greywacke origin and discoverer, etymology and class.

History of Nephelinite and Greywacke

The history of Nephelinite and Greywacke 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 Greywacke Origin and Discoverer

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

Etymology of Nephelinite and Greywacke

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

For Nephelinite,

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

For Greywacke,

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