Phyllite and Variolite Definition

Definition of Phyllite and Variolite

The general Phyllite and Variolite definition can be stated as: Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks. On the other hand, 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. Along with definition of Phyllite and Variolite, get to know about Properties of Phyllite and Variolite. Get to know more information about Phyllite and Variolite origin and discoverer, etymology and class.

History of Phyllite and Variolite

The history of Phyllite and Variolite 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.

Phyllite and Variolite Origin and Discoverer

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

Etymology of Phyllite and Variolite

Along with Phyllite and Variolite definition, know more about the etymology of Phyllite and Variolite. Etymology of Phyllite and Variolite gives information about origin and formation of a particular rock. Know more about Formation of Phyllite and Formation of Variolite. The etymology of Phyllite is From Greek phullon leaf + -ite1 while that of Variolite is From Greek phullon leaf + -ite1. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Phyllite belongs to Metamorphic Rocks while Variolite belongs to Igneous Rocks. The sub-class, group and other categories of Phyllite and Variolite are listed below.

For Phyllite,

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

For Variolite,

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