Porphyry and Oil shale Definition

Definition of Porphyry and Oil shale

The general Porphyry and Oil shale 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, Oil Shale is a fine-grained sedimentary rock from which oil is extracted. Along with definition of Porphyry and Oil shale, get to know about Properties of Porphyry and Oil shale. Get to know more information about Porphyry and Oil shale origin and discoverer, etymology and class.

History of Porphyry and Oil shale

The history of Porphyry and Oil shale 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 Oil shale Origin and Discoverer

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

Etymology of Porphyry and Oil shale

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

For Porphyry,

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

For Oil shale,

• Sub-class: Durable Rock and Soft Rock
• Group: Not applicable
• Other Categories: Fine grained rock and Opaque rock