Trondhjemite and Porphyry Definition

Definition of Trondhjemite and Porphyry

The general Trondhjemite and Porphyry definition can be stated as: Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.. On the other hand, Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix. Along with definition of Trondhjemite and Porphyry, get to know about Properties of Trondhjemite and Porphyry. Get to know more information about Trondhjemite and Porphyry origin and discoverer, etymology and class.

History of Trondhjemite and Porphyry

The history of Trondhjemite and Porphyry 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.

Trondhjemite and Porphyry Origin and Discoverer

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

Etymology of Trondhjemite and Porphyry

Along with Trondhjemite and Porphyry definition, know more about the etymology of Trondhjemite and Porphyry. Etymology of Trondhjemite and Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Trondhjemite and Formation of Porphyry. The etymology of Trondhjemite is not available while that of Porphyry is not available. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Trondhjemite and Porphyry belong to Igneous Rocks. The sub-class, group and other categories of Trondhjemite and Porphyry are listed below.

For Trondhjemite,

• Sub-class: Durable Rock and Hard Rock
• Group: Plutonic
• Other Categories: Coarse grained rock, Fine grained rock, Medium grained rock and Opaque rock

For Porphyry,

• Sub-class: Durable Rock and Hard Rock
• Group: Plutonic
• Other Categories: Fine grained rock and Opaque rock