Pegmatite and Shoshonite Definition

Definition of Pegmatite and Shoshonite

The general Pegmatite and Shoshonite definition can be stated as: Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. On the other hand, 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. Along with definition of Pegmatite and Shoshonite, get to know about Properties of Pegmatite and Shoshonite. Get to know more information about Pegmatite and Shoshonite origin and discoverer, etymology and class.

History of Pegmatite and Shoshonite

The history of Pegmatite and Shoshonite 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.

Pegmatite and Shoshonite Origin and Discoverer

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

Etymology of Pegmatite and Shoshonite

Along with Pegmatite and Shoshonite definition, know more about the etymology of Pegmatite and Shoshonite. Etymology of Pegmatite and Shoshonite gives information about origin and formation of a particular rock. Know more about Formation of Pegmatite and Formation of Shoshonite. The etymology of Pegmatite is From Greek pegma, pegmat which means- thing joined together + -ite while that of Shoshonite is From Greek pegma, pegmat which means- thing joined together + -ite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Pegmatite and Shoshonite belong to Igneous Rocks. The sub-class, group and other categories of Pegmatite and Shoshonite are listed below.

For Pegmatite,

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

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