Variolite and Foidolite Definition

Definition of Variolite and Foidolite

The general Variolite and Foidolite 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, Foidolite is a rare type of coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%. Along with definition of Variolite and Foidolite, get to know about Properties of Variolite and Foidolite. Get to know more information about Variolite and Foidolite origin and discoverer, etymology and class.

History of Variolite and Foidolite

The history of Variolite and Foidolite 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 Foidolite Origin and Discoverer

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

Etymology of Variolite and Foidolite

Along with Variolite and Foidolite definition, know more about the etymology of Variolite and Foidolite. Etymology of Variolite and Foidolite gives information about origin and formation of a particular rock. Know more about Formation of Variolite and Formation of Foidolite. The etymology of Variolite is From Latin varius, speckled, variegated while that of Foidolite 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 and Foidolite belong to Igneous Rocks. The sub-class, group and other categories of Variolite and Foidolite are listed below.

For Variolite,

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

For Foidolite,

• Sub-class: Durable Rock and Soft Rock
• Group: Plutonic
• Other Categories: Coarse grained rock, Fine grained rock, Medium grained rock and Opaque rock