Ijolite and Greywacke Definition

Definition of Ijolite and Greywacke

The general Ijolite and Greywacke 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, Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Along with definition of Ijolite and Greywacke, get to know about Properties of Ijolite and Greywacke. Get to know more information about Ijolite and Greywacke origin and discoverer, etymology and class.

History of Ijolite and Greywacke

The history of Ijolite and Greywacke 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 Greywacke Origin and Discoverer

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

Etymology of Ijolite and Greywacke

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

For Ijolite,

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

For Greywacke,

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