Shonkinite and Tonalite Definition

Definition of Shonkinite and Tonalite

The general Shonkinite and Tonalite definition can be stated as: Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents. 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 Shonkinite and Tonalite, get to know about Properties of Shonkinite and Tonalite. Get to know more information about Shonkinite and Tonalite origin and discoverer, etymology and class.

History of Shonkinite and Tonalite

The history of Shonkinite 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.

Shonkinite and Tonalite Origin and Discoverer

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

Etymology of Shonkinite and Tonalite

Along with Shonkinite and Tonalite definition, know more about the etymology of Shonkinite and Tonalite. Etymology of Shonkinite and Tonalite gives information about origin and formation of a particular rock. Know more about Formation of Shonkinite and Formation of Tonalite. The etymology of Shonkinite is From the name of Shonkin Sag ranges in the Highwood Mountains of north-central Montana, US while that of Tonalite is From the name of Shonkin Sag ranges in the Highwood Mountains of north-central Montana, US. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Shonkinite and Tonalite belong to Igneous Rocks. The sub-class, group and other categories of Shonkinite and Tonalite are listed below.

For Shonkinite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Not applicable
• 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