Chert and Ijolite Definition

Definition of Chert and Ijolite

The general Chert and Ijolite definition can be stated as: Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture. 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 Chert and Ijolite, get to know about Properties of Chert and Ijolite. Get to know more information about Chert and Ijolite origin and discoverer, etymology and class.

History of Chert and Ijolite

The history of Chert 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.

Chert and Ijolite Origin and Discoverer

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

Etymology of Chert and Ijolite

Along with Chert and Ijolite definition, know more about the etymology of Chert and Ijolite. Etymology of Chert and Ijolite gives information about origin and formation of a particular rock. Know more about Formation of Chert and Formation of Ijolite. The etymology of Chert is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use while that of Ijolite is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Chert belongs to Sedimentary Rocks while Ijolite belongs to Igneous Rocks. The sub-class, group and other categories of Chert and Ijolite are listed below.

For Chert,

• Sub-class: Durable Rock and Hard 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