Phonolite and Siltstone Definition

Definition of Phonolite and Siltstone

The general Phonolite and Siltstone 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, Siltstone can be defined as a fine-grained sedimentary rock which mainly consists of consolidated silt. Along with definition of Phonolite and Siltstone, get to know about Properties of Phonolite and Siltstone. Get to know more information about Phonolite and Siltstone origin and discoverer, etymology and class.

History of Phonolite and Siltstone

The history of Phonolite and Siltstone 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 Siltstone Origin and Discoverer

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

Etymology of Phonolite and Siltstone

Along with Phonolite and Siltstone definition, know more about the etymology of Phonolite and Siltstone. Etymology of Phonolite and Siltstone gives information about origin and formation of a particular rock. Know more about Formation of Phonolite and Formation of Siltstone. 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 Siltstone 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 belongs to Igneous Rocks while Siltstone belongs to Sedimentary Rocks. The sub-class, group and other categories of Phonolite and Siltstone 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 Siltstone,

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