Porphyry and Tonalite Definition

Definition of Porphyry and Tonalite

The general Porphyry and Tonalite definition can be stated as: Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix. 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 Porphyry and Tonalite, get to know about Properties of Porphyry and Tonalite. Get to know more information about Porphyry and Tonalite origin and discoverer, etymology and class.

History of Porphyry and Tonalite

The history of Porphyry 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.

Porphyry and Tonalite Origin and Discoverer

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

Etymology of Porphyry and Tonalite

Along with Porphyry and Tonalite definition, know more about the etymology of Porphyry and Tonalite. Etymology of Porphyry and Tonalite gives information about origin and formation of a particular rock. Know more about Formation of Porphyry and Formation of Tonalite. The etymology of Porphyry is From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites while that of Tonalite is From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Porphyry and Tonalite belong to Igneous Rocks. The sub-class, group and other categories of Porphyry and Tonalite are listed below.

For Porphyry,

• Sub-class: Durable Rock and Hard Rock
• Group: Plutonic
• 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