Greywacke and Borolanite Definition

Definition of Greywacke and Borolanite

The general Greywacke and Borolanite definition can be stated as: Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. On the other hand, Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix. Along with definition of Greywacke and Borolanite, get to know about Properties of Greywacke and Borolanite. Get to know more information about Greywacke and Borolanite origin and discoverer, etymology and class.

History of Greywacke and Borolanite

The history of Greywacke and Borolanite 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.

Greywacke and Borolanite Origin and Discoverer

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

Etymology of Greywacke and Borolanite

Along with Greywacke and Borolanite definition, know more about the etymology of Greywacke and Borolanite. Etymology of Greywacke and Borolanite gives information about origin and formation of a particular rock. Know more about Formation of Greywacke and Formation of Borolanite. The etymology of Greywacke is From German Grauwacke, from grau grey + wacke while that of Borolanite is From German Grauwacke, from grau grey + wacke. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Greywacke belongs to Sedimentary Rocks while Borolanite belongs to Igneous Rocks. The sub-class, group and other categories of Greywacke and Borolanite are listed below.

For Greywacke,

• Sub-class: Durable Rock and Hard Rock
• Group: Not applicable
• Other Categories: Fine grained rock and Opaque rock

For Borolanite,

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