Lignite and Adakite Definition

Definition of Lignite and Adakite

The general Lignite and Adakite definition can be stated as: Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat. On the other hand, Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs. Along with definition of Lignite and Adakite, get to know about Properties of Lignite and Adakite. Get to know more information about Lignite and Adakite origin and discoverer, etymology and class.

History of Lignite and Adakite

The history of Lignite and Adakite 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.

Lignite and Adakite Origin and Discoverer

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

Etymology of Lignite and Adakite

Along with Lignite and Adakite definition, know more about the etymology of Lignite and Adakite. Etymology of Lignite and Adakite gives information about origin and formation of a particular rock. Know more about Formation of Lignite and Formation of Adakite. The etymology of Lignite is From French, Latin lignum wood + -ite1 while that of Adakite is From French, Latin lignum wood + -ite1. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Lignite belongs to Sedimentary Rocks while Adakite belongs to Igneous Rocks. The sub-class, group and other categories of Lignite and Adakite are listed below.

For Lignite,

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

For Adakite,

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