Rhyodacite and Rapakivi Granite Definition

Definition of Rhyodacite and Rapakivi Granite

The general Rhyodacite and Rapakivi Granite definition can be stated as: Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite. 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 Rhyodacite and Rapakivi Granite, get to know about Properties of Rhyodacite and Rapakivi Granite. Get to know more information about Rhyodacite and Rapakivi Granite origin and discoverer, etymology and class.

History of Rhyodacite and Rapakivi Granite

The history of Rhyodacite 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.

Rhyodacite and Rapakivi Granite Origin and Discoverer

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

Etymology of Rhyodacite and Rapakivi Granite

Along with Rhyodacite and Rapakivi Granite definition, know more about the etymology of Rhyodacite and Rapakivi Granite. Etymology of Rhyodacite and Rapakivi Granite gives information about origin and formation of a particular rock. Know more about Formation of Rhyodacite and Formation of Rapakivi Granite. The etymology of Rhyodacite is Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite while that of Rapakivi Granite is Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rhyodacite and Rapakivi Granite belong to Igneous Rocks. The sub-class, group and other categories of Rhyodacite and Rapakivi Granite are listed below.

For Rhyodacite,

• 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