Phyllite and Tonalite Definition

Definition of Phyllite and Tonalite

The general Phyllite and Tonalite definition can be stated as: Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks. 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 Phyllite and Tonalite, get to know about Properties of Phyllite and Tonalite. Get to know more information about Phyllite and Tonalite origin and discoverer, etymology and class.

History of Phyllite and Tonalite

The history of Phyllite 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.

Phyllite and Tonalite Origin and Discoverer

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

Etymology of Phyllite and Tonalite

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

For Phyllite,

• Sub-class: Durable Rock and Soft 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