Phonolite and Foidolite Definition

Definition of Phonolite and Foidolite

The general Phonolite and Foidolite definition can be stated as: Phonolite is an uncommon extrusive igneous rock volcanic rock of intermediate chemical composition between felsic and mafic. On the other hand, Foidolite is a rare type of coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%. Along with definition of Phonolite and Foidolite, get to know about Properties of Phonolite and Foidolite. Get to know more information about Phonolite and Foidolite origin and discoverer, etymology and class.

History of Phonolite and Foidolite

The history of Phonolite and Foidolite 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.

Phonolite and Foidolite Origin and Discoverer

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

Etymology of Phonolite and Foidolite

Along with Phonolite and Foidolite definition, know more about the etymology of Phonolite and Foidolite. Etymology of Phonolite and Foidolite gives information about origin and formation of a particular rock. Know more about Formation of Phonolite and Formation of Foidolite. The etymology of Phonolite is From the Greek meaning sounding stone because of the metallic sound it produces if an unfractured plate is hit while that of Foidolite is From the Greek meaning sounding stone because of the metallic sound it produces if an unfractured plate is hit. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Phonolite and Foidolite belong to Igneous Rocks. The sub-class, group and other categories of Phonolite and Foidolite are listed below.

For Phonolite,

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

For Foidolite,

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