Slate and Variolite Definition

Definition of Slate and Variolite

The general Slate and Variolite definition can be stated as: Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. 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 Slate and Variolite, get to know about Properties of Slate and Variolite. Get to know more information about Slate and Variolite origin and discoverer, etymology and class.

History of Slate and Variolite

The history of Slate 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.

Slate and Variolite Origin and Discoverer

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

Etymology of Slate and Variolite

Along with Slate and Variolite definition, know more about the etymology of Slate and Variolite. Etymology of Slate and Variolite gives information about origin and formation of a particular rock. Know more about Formation of Slate and Formation of Variolite. The etymology of Slate is From Old French esclate, from esclat (French éclat) while that of Variolite is From Old French esclate, from esclat (French éclat). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Slate belongs to Metamorphic Rocks while Variolite belongs to Igneous Rocks. The sub-class, group and other categories of Slate and Variolite are listed below.

For Slate,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group:
• Other Categories: Fine grained rock and Opaque rock

For Variolite,

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