Lignite and Tachylite Definition

Definition of Lignite and Tachylite

The general Lignite and Tachylite 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, Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt. Along with definition of Lignite and Tachylite, get to know about Properties of Lignite and Tachylite. Get to know more information about Lignite and Tachylite origin and discoverer, etymology and class.

History of Lignite and Tachylite

The history of Lignite and Tachylite 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 Tachylite Origin and Discoverer

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

Etymology of Lignite and Tachylite

Along with Lignite and Tachylite definition, know more about the etymology of Lignite and Tachylite. Etymology of Lignite and Tachylite gives information about origin and formation of a particular rock. Know more about Formation of Lignite and Formation of Tachylite. The etymology of Lignite is From French, Latin lignum wood + -ite1 while that of Tachylite 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 Tachylite belongs to Igneous Rocks. The sub-class, group and other categories of Lignite and Tachylite are listed below.

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

For Tachylite,

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