Tonalite and Shoshonite Definition

Definition of Tonalite and Shoshonite

The general Tonalite and Shoshonite definition can be stated as: Tonalite is a coarse-grained plutonic rock consisting mainly of sodic plagioclase, quartz, and hornblende or other mafic minerals with phaneritic texture. 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 Tonalite and Shoshonite, get to know about Properties of Tonalite and Shoshonite. Get to know more information about Tonalite and Shoshonite origin and discoverer, etymology and class.

History of Tonalite and Shoshonite

The history of Tonalite 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.

Tonalite and Shoshonite Origin and Discoverer

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

Etymology of Tonalite and Shoshonite

Along with Tonalite and Shoshonite definition, know more about the etymology of Tonalite and Shoshonite. Etymology of Tonalite and Shoshonite gives information about origin and formation of a particular rock. Know more about Formation of Tonalite and Formation of Shoshonite. The etymology of Tonalite is From Tonale Pass, northern Italy, + -ite1 while that of Shoshonite is From Tonale Pass, northern Italy, + -ite1. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Tonalite and Shoshonite belong to Igneous Rocks. The sub-class, group and other categories of Tonalite and Shoshonite are listed below.

For Tonalite,

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