Ijolite and Rapakivi Granite Definition

Definition of Ijolite and Rapakivi Granite

The general Ijolite and Rapakivi Granite 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, Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. Along with definition of Ijolite and Rapakivi Granite, get to know about Properties of Ijolite and Rapakivi Granite. Get to know more information about Ijolite and Rapakivi Granite origin and discoverer, etymology and class.

History of Ijolite and Rapakivi Granite

The history of Ijolite and Rapakivi Granite 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 Rapakivi Granite Origin and Discoverer

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

Etymology of Ijolite and Rapakivi Granite

Along with Ijolite and Rapakivi Granite definition, know more about the etymology of Ijolite and Rapakivi Granite. Etymology of Ijolite and Rapakivi Granite gives information about origin and formation of a particular rock. Know more about Formation of Ijolite and Formation of Rapakivi Granite. 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 Rapakivi Granite 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 Rapakivi Granite belong to Igneous Rocks. The sub-class, group and other categories of Ijolite and Rapakivi Granite are listed below.

For Ijolite,

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

For Rapakivi Granite,

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