Ijolite and Chalk Definition

Definition of Ijolite and Chalk

The general Ijolite and Chalk 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, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Ijolite and Chalk, get to know about Properties of Ijolite and Chalk. Get to know more information about Ijolite and Chalk origin and discoverer, etymology and class.

History of Ijolite and Chalk

The history of Ijolite and Chalk 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 Chalk Origin and Discoverer

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

Etymology of Ijolite and Chalk

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

For Ijolite,

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

For Chalk,

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