Lignite and Trondhjemite Definition

Definition of Lignite and Trondhjemite

The general Lignite and Trondhjemite 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, Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.. Along with definition of Lignite and Trondhjemite, get to know about Properties of Lignite and Trondhjemite. Get to know more information about Lignite and Trondhjemite origin and discoverer, etymology and class.

History of Lignite and Trondhjemite

The history of Lignite and Trondhjemite 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 Trondhjemite Origin and Discoverer

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

Etymology of Lignite and Trondhjemite

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

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