Pumice and Gneiss Definition

Definition of Pumice and Gneiss

The general Pumice and Gneiss definition can be stated as: Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. 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 Pumice and Gneiss, get to know about Properties of Pumice and Gneiss. Get to know more information about Pumice and Gneiss origin and discoverer, etymology and class.

History of Pumice and Gneiss

The history of Pumice 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.

Pumice and Gneiss Origin and Discoverer

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

Etymology of Pumice and Gneiss

Along with Pumice and Gneiss definition, know more about the etymology of Pumice and Gneiss. Etymology of Pumice and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Pumice and Formation of Gneiss. The etymology of Pumice is From Old French pomis, from a Latin dialect variant of pumex while that of Gneiss is From Old French pomis, from a Latin dialect variant of pumex. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Pumice belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Pumice and Gneiss are listed below.

For Pumice,

• 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: Not applicable
• Other Categories: Coarse grained rock, Medium grained rock and Opaque rock