Trachyte and Variolite Definition

Definition of Trachyte and Variolite

The general Trachyte and Variolite definition can be stated as: Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar. 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 Trachyte and Variolite, get to know about Properties of Trachyte and Variolite. Get to know more information about Trachyte and Variolite origin and discoverer, etymology and class.

History of Trachyte and Variolite

The history of Trachyte 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.

Trachyte and Variolite Origin and Discoverer

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

Etymology of Trachyte and Variolite

Along with Trachyte and Variolite definition, know more about the etymology of Trachyte and Variolite. Etymology of Trachyte and Variolite gives information about origin and formation of a particular rock. Know more about Formation of Trachyte and Formation of Variolite. The etymology of Trachyte is From Greek trakhus rough’ or trakhutēs roughness while that of Variolite is From Greek trakhus rough’ or trakhutēs roughness. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Trachyte and Variolite belong to Igneous Rocks. The sub-class, group and other categories of Trachyte and Variolite are listed below.

For Trachyte,

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

For Variolite,

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