Felsite and Rapakivi Granite Definition

Definition of Felsite and Rapakivi Granite

The general Felsite and Rapakivi Granite definition can be stated as: Felsite is a very fine grained volcanic rock that may or may not contain larger crystals and light colored rock that typically requires petrographic examination or chemical analysis for more precise definition. On the other hand, Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. Along with definition of Felsite and Rapakivi Granite, get to know about Properties of Felsite and Rapakivi Granite. Get to know more information about Felsite and Rapakivi Granite origin and discoverer, etymology and class.

History of Felsite and Rapakivi Granite

The history of Felsite and Rapakivi Granite 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.

Felsite and Rapakivi Granite Origin and Discoverer

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

Etymology of Felsite and Rapakivi Granite

Along with Felsite and Rapakivi Granite definition, know more about the etymology of Felsite and Rapakivi Granite. Etymology of Felsite and Rapakivi Granite gives information about origin and formation of a particular rock. Know more about Formation of Felsite and Formation of Rapakivi Granite. The etymology of Felsite is From English feldspar and -ite while that of Rapakivi Granite is From English feldspar and -ite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Felsite and Rapakivi Granite belong to Igneous Rocks. The sub-class, group and other categories of Felsite and Rapakivi Granite are listed below.

For Felsite,

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

For Rapakivi Granite,

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