Phonolite and Lignite Definition

Definition of Phonolite and Lignite

The general Phonolite and Lignite 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, Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat. Along with definition of Phonolite and Lignite, get to know about Properties of Phonolite and Lignite. Get to know more information about Phonolite and Lignite origin and discoverer, etymology and class.

History of Phonolite and Lignite

The history of Phonolite and Lignite 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 Lignite Origin and Discoverer

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

Etymology of Phonolite and Lignite

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

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