Shoshonite and Tonalite Definition

Definition of Shoshonite and Tonalite

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

History of Shoshonite and Tonalite

The history of Shoshonite and Tonalite 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 Tonalite Origin and Discoverer

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

Etymology of Shoshonite and Tonalite

Along with Shoshonite and Tonalite definition, know more about the etymology of Shoshonite and Tonalite. Etymology of Shoshonite and Tonalite gives information about origin and formation of a particular rock. Know more about Formation of Shoshonite and Formation of Tonalite. The etymology of Shoshonite is From the place of origin called Shoshone riverin Wyoming while that of Tonalite 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 Tonalite belong to Igneous Rocks. The sub-class, group and other categories of Shoshonite and Tonalite 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 Tonalite,

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