Nephelinite and Siltstone Definition

Definition of Nephelinite and Siltstone

The general Nephelinite and Siltstone 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, Siltstone can be defined as a fine-grained sedimentary rock which mainly consists of consolidated silt. Along with definition of Nephelinite and Siltstone, get to know about Properties of Nephelinite and Siltstone. Get to know more information about Nephelinite and Siltstone origin and discoverer, etymology and class.

History of Nephelinite and Siltstone

The history of Nephelinite and Siltstone 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 Siltstone Origin and Discoverer

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

Etymology of Nephelinite and Siltstone

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

For Nephelinite,

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

For Siltstone,

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