Gneiss and Hornblendite Definition

Definition of Gneiss and Hornblendite

The general Gneiss and Hornblendite definition can be stated as: 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. On the other hand, Hornblendite is a type of igneous plutonic rock consisting mainly of amphibole hornblende and is a type of Amphibolite rock. Along with definition of Gneiss and Hornblendite, get to know about Properties of Gneiss and Hornblendite. Get to know more information about Gneiss and Hornblendite origin and discoverer, etymology and class.

History of Gneiss and Hornblendite

The history of Gneiss and Hornblendite 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.

Gneiss and Hornblendite Origin and Discoverer

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

Etymology of Gneiss and Hornblendite

Along with Gneiss and Hornblendite definition, know more about the etymology of Gneiss and Hornblendite. Etymology of Gneiss and Hornblendite gives information about origin and formation of a particular rock. Know more about Formation of Gneiss and Formation of Hornblendite. The etymology of Gneiss is From the Middle High German verb gneist (to spark; so called because the rock glitters) while that of Hornblendite is From the Middle High German verb gneist (to spark; so called because the rock glitters). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Gneiss belongs to Metamorphic Rocks while Hornblendite belongs to Igneous Rocks. The sub-class, group and other categories of Gneiss and Hornblendite are listed below.

For Gneiss,

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

For Hornblendite,

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