Ijolite and Tonalite Definition

Definition of Ijolite and Tonalite

The general Ijolite and Tonalite 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, Tonalite is a coarse-grained plutonic rock consisting mainly of sodic plagioclase, quartz, and hornblende or other mafic minerals with phaneritic texture. Along with definition of Ijolite and Tonalite, get to know about Properties of Ijolite and Tonalite. Get to know more information about Ijolite and Tonalite origin and discoverer, etymology and class.

History of Ijolite and Tonalite

The history of Ijolite and Tonalite 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 Tonalite Origin and Discoverer

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

Etymology of Ijolite and Tonalite

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

For Ijolite,

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

For Tonalite,

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