Coal and Anorthosite Definition

Definition of Coal and Anorthosite

The general Coal and Anorthosite definition can be stated as: Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds. On the other hand, Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase. Along with definition of Coal and Anorthosite, get to know about Properties of Coal and Anorthosite. Get to know more information about Coal and Anorthosite origin and discoverer, etymology and class.

History of Coal and Anorthosite

The history of Coal and Anorthosite 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.

Coal and Anorthosite Origin and Discoverer

Coal and Anorthosite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Coal and Anorthosite. In this section, you will know about Coal and Anorthosite Origin and Discoverer. Origin of Coal is USA whereas Origin of Anorthosite is Unknown. It is interesting to know the name of Coal and Anorthosite discoverer. The Discoverer of Coal is John Peter Salley and the discoverer of Anorthosite is Unknown.

Etymology of Coal and Anorthosite

Along with Coal and Anorthosite definition, know more about the etymology of Coal and Anorthosite. Etymology of Coal and Anorthosite gives information about origin and formation of a particular rock. Know more about Formation of Coal and Formation of Anorthosite. The etymology of Coal is From the Old English term col, which has meant mineral of fossilized carbon since the 13th century while that of Anorthosite is From the Old English term col, which has meant mineral of fossilized carbon since the 13th century. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Coal belongs to Sedimentary Rocks while Anorthosite belongs to Igneous Rocks. The sub-class, group and other categories of Coal and Anorthosite are listed below.

For Coal,

• 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 Anorthosite,

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