Variolite and Argillite Definition

Definition of Variolite and Argillite

The general Variolite and Argillite definition can be stated as: Variolites are a group of dark green basic igneous rocks which exhibit pale colored spots, or spherules, especially on weathered surfaces, that give them a pockmarked appearance. On the other hand, 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. Along with definition of Variolite and Argillite, get to know about Properties of Variolite and Argillite. Get to know more information about Variolite and Argillite origin and discoverer, etymology and class.

History of Variolite and Argillite

The history of Variolite and Argillite 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.

Variolite and Argillite Origin and Discoverer

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

Etymology of Variolite and Argillite

Along with Variolite and Argillite definition, know more about the etymology of Variolite and Argillite. Etymology of Variolite and Argillite gives information about origin and formation of a particular rock. Know more about Formation of Variolite and Formation of Argillite. The etymology of Variolite is From Latin varius, speckled, variegated while that of Argillite is From Latin varius, speckled, variegated. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Variolite belongs to Igneous Rocks while Argillite belongs to Sedimentary Rocks. The sub-class, group and other categories of Variolite and Argillite are listed below.

For Variolite,

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

For Argillite,

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