Arkose and Rapakivi Granite Definition

Definition of Arkose and Rapakivi Granite

The general Arkose and Rapakivi Granite definition can be stated as: Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar. 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 Arkose and Rapakivi Granite, get to know about Properties of Arkose and Rapakivi Granite. Get to know more information about Arkose and Rapakivi Granite origin and discoverer, etymology and class.

History of Arkose and Rapakivi Granite

The history of Arkose 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.

Arkose and Rapakivi Granite Origin and Discoverer

Arkose 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 Arkose and Rapakivi Granite. In this section, you will know about Arkose and Rapakivi Granite Origin and Discoverer. Origin of Arkose is France whereas Origin of Rapakivi Granite is Finland, Europe. It is interesting to know the name of Arkose and Rapakivi Granite discoverer. The Discoverer of Arkose is Alexandre Brongniart and the discoverer of Rapakivi Granite is Jakob Sederholm.

Etymology of Arkose and Rapakivi Granite

Along with Arkose and Rapakivi Granite definition, know more about the etymology of Arkose and Rapakivi Granite. Etymology of Arkose and Rapakivi Granite gives information about origin and formation of a particular rock. Know more about Formation of Arkose and Formation of Rapakivi Granite. The etymology of Arkose is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones while that of Rapakivi Granite is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Arkose belongs to Sedimentary Rocks while Rapakivi Granite belongs to Igneous Rocks. The sub-class, group and other categories of Arkose and Rapakivi Granite are listed below.

For Arkose,

• Sub-class: Durable Rock and Hard Rock
• Group: Not applicable
• Other Categories: Coarse 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