Argillite and Comendite Definition

Definition of Argillite and Comendite

The general Argillite and Comendite 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, Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite. Along with definition of Argillite and Comendite, get to know about Properties of Argillite and Comendite. Get to know more information about Argillite and Comendite origin and discoverer, etymology and class.

History of Argillite and Comendite

The history of Argillite and Comendite 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 Comendite Origin and Discoverer

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

Etymology of Argillite and Comendite

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

For Argillite,

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

For Comendite,

• Sub-class: Durable Rock and Hard Rock
• Group: Volcanic
• Other Categories: Medium grained rock and Opaque rock