Schist and Tonalite Definition

Definition of Schist and Tonalite

The general Schist and Tonalite definition can be stated as: Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation. 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 Schist and Tonalite, get to know about Properties of Schist and Tonalite. Get to know more information about Schist and Tonalite origin and discoverer, etymology and class.

History of Schist and Tonalite

The history of Schist 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.

Schist and Tonalite Origin and Discoverer

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

Etymology of Schist and Tonalite

Along with Schist and Tonalite definition, know more about the etymology of Schist and Tonalite. Etymology of Schist and Tonalite gives information about origin and formation of a particular rock. Know more about Formation of Schist and Formation of Tonalite. The etymology of Schist is From French schiste, Greek skhistos i.e. split while that of Tonalite is From French schiste, Greek skhistos i.e. split. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Schist belongs to Metamorphic Rocks while Tonalite belongs to Igneous Rocks. The sub-class, group and other categories of Schist and Tonalite are listed below.

For Schist,

• 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