Gossan and Porphyry Definition

Definition of Gossan and Porphyry

The general Gossan and Porphyry definition can be stated as: Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.. 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 Gossan and Porphyry, get to know about Properties of Gossan and Porphyry. Get to know more information about Gossan and Porphyry origin and discoverer, etymology and class.

History of Gossan and Porphyry

The history of Gossan 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.

Gossan and Porphyry Origin and Discoverer

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

Etymology of Gossan and Porphyry

Along with Gossan and Porphyry definition, know more about the etymology of Gossan and Porphyry. Etymology of Gossan and Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Gossan and Formation of Porphyry. The etymology of Gossan is From Cornish gossen from gos, blood from Old Cornish guit while that of Porphyry is From Cornish gossen from gos, blood from Old Cornish guit. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Gossan belongs to Metamorphic Rocks while Porphyry belongs to Igneous Rocks. The sub-class, group and other categories of Gossan and Porphyry are listed below.

For Gossan,

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