Rapakivi Granite and Gneiss Definition

Definition of Rapakivi Granite and Gneiss

The general Rapakivi Granite and Gneiss definition can be stated as: Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. 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 Rapakivi Granite and Gneiss, get to know about Properties of Rapakivi Granite and Gneiss. Get to know more information about Rapakivi Granite and Gneiss origin and discoverer, etymology and class.

History of Rapakivi Granite and Gneiss

The history of Rapakivi Granite 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.

Rapakivi Granite and Gneiss Origin and Discoverer

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

Etymology of Rapakivi Granite and Gneiss

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

For Rapakivi Granite,

• Sub-class: Durable Rock and Hard Rock
• Group: Plutonic
• Other Categories: Coarse 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