Pumice and Lignite Definition

Definition of Pumice and Lignite

The general Pumice and Lignite definition can be stated as: Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. 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 Pumice and Lignite, get to know about Properties of Pumice and Lignite. Get to know more information about Pumice and Lignite origin and discoverer, etymology and class.

History of Pumice and Lignite

The history of Pumice 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.

Pumice and Lignite Origin and Discoverer

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

Etymology of Pumice and Lignite

Along with Pumice and Lignite definition, know more about the etymology of Pumice and Lignite. Etymology of Pumice and Lignite gives information about origin and formation of a particular rock. Know more about Formation of Pumice and Formation of Lignite. The etymology of Pumice is From Old French pomis, from a Latin dialect variant of pumex while that of Lignite is From Old French pomis, from a Latin dialect variant of pumex. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Pumice belongs to Igneous Rocks while Lignite belongs to Sedimentary Rocks. The sub-class, group and other categories of Pumice and Lignite are listed below.

For Pumice,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• 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