Andesite and Syenite Definition

Definition of Andesite and Syenite

The general Andesite and Syenite definition can be stated as: Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava. On the other hand, Syenite is a coarse-grained igneous rock which is composed mainly of alkali feldspar and various ferromagnesian minerals. Along with definition of Andesite and Syenite, get to know about Properties of Andesite and Syenite. Get to know more information about Andesite and Syenite origin and discoverer, etymology and class.

History of Andesite and Syenite

The history of Andesite and Syenite 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.

Andesite and Syenite Origin and Discoverer

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

Etymology of Andesite and Syenite

Along with Andesite and Syenite definition, know more about the etymology of Andesite and Syenite. Etymology of Andesite and Syenite gives information about origin and formation of a particular rock. Know more about Formation of Andesite and Formation of Syenite. The etymology of Andesite is From Andes mountains, where it is found in abundance while that of Syenite is From Andes mountains, where it is found in abundance. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Andesite and Syenite belong to Igneous Rocks. The sub-class, group and other categories of Andesite and Syenite are listed below.

For Andesite,

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

For Syenite,

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