Slate and Tonalite Definition

Definition of Slate and Tonalite

The general Slate and Tonalite definition can be stated as: Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. 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 Slate and Tonalite, get to know about Properties of Slate and Tonalite. Get to know more information about Slate and Tonalite origin and discoverer, etymology and class.

History of Slate and Tonalite

The history of Slate 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.

Slate and Tonalite Origin and Discoverer

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

Etymology of Slate and Tonalite

Along with Slate and Tonalite definition, know more about the etymology of Slate and Tonalite. Etymology of Slate and Tonalite gives information about origin and formation of a particular rock. Know more about Formation of Slate and Formation of Tonalite. The etymology of Slate is From Old French esclate, from esclat (French éclat) while that of Tonalite is From Old French esclate, from esclat (French éclat). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Slate belongs to Metamorphic Rocks while Tonalite belongs to Igneous Rocks. The sub-class, group and other categories of Slate and Tonalite are listed below.

For Slate,

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