Variolite and Nephelinite Definition

Definition of Variolite and Nephelinite

The general Variolite and Nephelinite definition can be stated as: Variolites are a group of dark green basic igneous rocks which exhibit pale colored spots, or spherules, especially on weathered surfaces, that give them a pockmarked appearance. On the other hand, Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).. Along with definition of Variolite and Nephelinite, get to know about Properties of Variolite and Nephelinite. Get to know more information about Variolite and Nephelinite origin and discoverer, etymology and class.

History of Variolite and Nephelinite

The history of Variolite and Nephelinite 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.

Variolite and Nephelinite Origin and Discoverer

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

Etymology of Variolite and Nephelinite

Along with Variolite and Nephelinite definition, know more about the etymology of Variolite and Nephelinite. Etymology of Variolite and Nephelinite gives information about origin and formation of a particular rock. Know more about Formation of Variolite and Formation of Nephelinite. The etymology of Variolite is From Latin varius, speckled, variegated while that of Nephelinite is From Latin varius, speckled, variegated. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Variolite and Nephelinite belong to Igneous Rocks. The sub-class, group and other categories of Variolite and Nephelinite are listed below.

For Variolite,

• Sub-class: Durable Rock and Hard Rock
• Group: Volcanic
• Other Categories: Opaque rock

For Nephelinite,

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