Ijolite and Variolite Definition

Definition of Ijolite and Variolite

The general Ijolite and Variolite definition can be stated as: Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite. On the other hand, 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. Along with definition of Ijolite and Variolite, get to know about Properties of Ijolite and Variolite. Get to know more information about Ijolite and Variolite origin and discoverer, etymology and class.

History of Ijolite and Variolite

The history of Ijolite and Variolite 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.

Ijolite and Variolite Origin and Discoverer

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

Etymology of Ijolite and Variolite

Along with Ijolite and Variolite definition, know more about the etymology of Ijolite and Variolite. Etymology of Ijolite and Variolite gives information about origin and formation of a particular rock. Know more about Formation of Ijolite and Formation of Variolite. The etymology of Ijolite is From the first syllable of the Finnish words Ii-vaara, Iijoki, &c. commonly used geographical names in Finland, and the Gr. Xiflos, a stone while that of Variolite is From the first syllable of the Finnish words Ii-vaara, Iijoki, &c. commonly used geographical names in Finland, and the Gr. Xiflos, a stone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Ijolite and Variolite belong to Igneous Rocks. The sub-class, group and other categories of Ijolite and Variolite are listed below.

For Ijolite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Plutonic
• Other Categories: Coarse grained rock and Opaque rock

For Variolite,

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