Porphyry and Dacite Definition

Definition of Porphyry and Dacite

The general Porphyry and Dacite 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, Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite. Along with definition of Porphyry and Dacite, get to know about Properties of Porphyry and Dacite. Get to know more information about Porphyry and Dacite origin and discoverer, etymology and class.

History of Porphyry and Dacite

The history of Porphyry and Dacite 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 Dacite Origin and Discoverer

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

Etymology of Porphyry and Dacite

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

For Porphyry,

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

For Dacite,

• Sub-class: Durable Rock and Soft Rock
• Group: Volcanic
• Other Categories: Fine grained rock, Medium grained rock and Opaque rock