Trachyte and Gneiss Definition

Definition of Trachyte and Gneiss

The general Trachyte and Gneiss definition can be stated as: Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar. On the other hand, Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Along with definition of Trachyte and Gneiss, get to know about Properties of Trachyte and Gneiss. Get to know more information about Trachyte and Gneiss origin and discoverer, etymology and class.

History of Trachyte and Gneiss

The history of Trachyte and Gneiss 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 Gneiss Origin and Discoverer

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

Etymology of Trachyte and Gneiss

Along with Trachyte and Gneiss definition, know more about the etymology of Trachyte and Gneiss. Etymology of Trachyte and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Trachyte and Formation of Gneiss. The etymology of Trachyte is From Greek trakhus rough’ or trakhutēs roughness while that of Gneiss 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 belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Trachyte and Gneiss are listed below.

For Trachyte,

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

For Gneiss,

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