Shoshonite and Rapakivi Granite Definition

Definition of Shoshonite and Rapakivi Granite

The general Shoshonite and Rapakivi Granite definition can be stated as: Shoshonite is a basaltic rock, properly a potassic trachyandesite, composed of olivine, augite and plagioclase phenocrysts in a groundmass with calcic plagioclase and sanidine and some dark-colored volcanic glass. 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 Shoshonite and Rapakivi Granite, get to know about Properties of Shoshonite and Rapakivi Granite. Get to know more information about Shoshonite and Rapakivi Granite origin and discoverer, etymology and class.

History of Shoshonite and Rapakivi Granite

The history of Shoshonite 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.

Shoshonite and Rapakivi Granite Origin and Discoverer

Shoshonite 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 Shoshonite and Rapakivi Granite. In this section, you will know about Shoshonite and Rapakivi Granite Origin and Discoverer. Origin of Shoshonite is Wyoming,USA whereas Origin of Rapakivi Granite is Finland, Europe. It is interesting to know the name of Shoshonite and Rapakivi Granite discoverer. The Discoverer of Shoshonite is Iddings and the discoverer of Rapakivi Granite is Jakob Sederholm.

Etymology of Shoshonite and Rapakivi Granite

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

For Shoshonite,

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