Rhyodacite and Pegmatite Definition

Definition of Rhyodacite and Pegmatite

The general Rhyodacite and Pegmatite definition can be stated as: Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite. On the other hand, Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. Along with definition of Rhyodacite and Pegmatite, get to know about Properties of Rhyodacite and Pegmatite. Get to know more information about Rhyodacite and Pegmatite origin and discoverer, etymology and class.

History of Rhyodacite and Pegmatite

The history of Rhyodacite and Pegmatite 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 Pegmatite Origin and Discoverer

Rhyodacite and Pegmatite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Rhyodacite and Pegmatite. In this section, you will know about Rhyodacite and Pegmatite Origin and Discoverer. Origin of Rhyodacite is USA whereas Origin of Pegmatite is Unknown. It is interesting to know the name of Rhyodacite and Pegmatite discoverer. The Discoverer of Rhyodacite is Unknown and the discoverer of Pegmatite is R. J. Hauy.

Etymology of Rhyodacite and Pegmatite

Along with Rhyodacite and Pegmatite definition, know more about the etymology of Rhyodacite and Pegmatite. Etymology of Rhyodacite and Pegmatite gives information about origin and formation of a particular rock. Know more about Formation of Rhyodacite and Formation of Pegmatite. 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 Pegmatite 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 Pegmatite belong to Igneous Rocks. The sub-class, group and other categories of Rhyodacite and Pegmatite are listed below.

For Rhyodacite,

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

For Pegmatite,

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