Argillite and Ijolite Definition

Definition of Argillite and Ijolite

The general Argillite and Ijolite definition can be stated as: Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate. 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 Argillite and Ijolite, get to know about Properties of Argillite and Ijolite. Get to know more information about Argillite and Ijolite origin and discoverer, etymology and class.

History of Argillite and Ijolite

The history of Argillite 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.

Argillite and Ijolite Origin and Discoverer

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

Etymology of Argillite and Ijolite

Along with Argillite and Ijolite definition, know more about the etymology of Argillite and Ijolite. Etymology of Argillite and Ijolite gives information about origin and formation of a particular rock. Know more about Formation of Argillite and Formation of Ijolite. The etymology of Argillite is From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite while that of Ijolite is From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Argillite belongs to Sedimentary Rocks while Ijolite belongs to Igneous Rocks. The sub-class, group and other categories of Argillite and Ijolite are listed below.

For Argillite,

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