Arkose and Ijolite Definition

Definition of Arkose and Ijolite

The general Arkose and Ijolite definition can be stated as: Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar. On the other hand, Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite. Along with definition of Arkose and Ijolite, get to know about Properties of Arkose and Ijolite. Get to know more information about Arkose and Ijolite origin and discoverer, etymology and class.

History of Arkose and Ijolite

The history of Arkose and Ijolite 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.

Arkose and Ijolite Origin and Discoverer

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

Etymology of Arkose and Ijolite

Along with Arkose and Ijolite definition, know more about the etymology of Arkose and Ijolite. Etymology of Arkose and Ijolite gives information about origin and formation of a particular rock. Know more about Formation of Arkose and Formation of Ijolite. The etymology of Arkose is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones while that of Ijolite is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Arkose belongs to Sedimentary Rocks while Ijolite belongs to Igneous Rocks. The sub-class, group and other categories of Arkose and Ijolite are listed below.

For Arkose,

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

For Ijolite,

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