Rhyolite and Foidolite Definition

Definition of Rhyolite and Foidolite

The general Rhyolite and Foidolite definition can be stated as: Rhyolite is a fine-grained igneous rock which is rich in silica. 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 Rhyolite and Foidolite, get to know about Properties of Rhyolite and Foidolite. Get to know more information about Rhyolite and Foidolite origin and discoverer, etymology and class.

History of Rhyolite and Foidolite

The history of Rhyolite 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.

Rhyolite and Foidolite Origin and Discoverer

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

Etymology of Rhyolite and Foidolite

Along with Rhyolite and Foidolite definition, know more about the etymology of Rhyolite and Foidolite. Etymology of Rhyolite and Foidolite gives information about origin and formation of a particular rock. Know more about Formation of Rhyolite and Formation of Foidolite. The etymology of Rhyolite is From German Rhyolit, from Greek rhuax lava stream + lithos stone while that of Foidolite is From German Rhyolit, from Greek rhuax lava stream + lithos stone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rhyolite and Foidolite belong to Igneous Rocks. The sub-class, group and other categories of Rhyolite and Foidolite are listed below.

For Rhyolite,

• Sub-class: Durable Rock and Hard Rock
• Group: Volcanic
• Other Categories: Coarse 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