Foidolite and Gneiss Definition

Definition of Foidolite and Gneiss

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

History of Foidolite and Gneiss

The history of Foidolite 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.

Foidolite and Gneiss Origin and Discoverer

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

Etymology of Foidolite and Gneiss

Along with Foidolite and Gneiss definition, know more about the etymology of Foidolite and Gneiss. Etymology of Foidolite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Foidolite and Formation of Gneiss. The etymology of Foidolite is From the mineral feldspathoid which is the main content of rock while that of Gneiss is From the mineral feldspathoid which is the main content of rock. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Foidolite belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Foidolite and Gneiss are listed below.

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

For Gneiss,

• Sub-class: Durable Rock and Hard Rock
• Group: Not applicable
• Other Categories: Coarse grained rock, Medium grained rock and Opaque rock