Coal and Adamellite Definition

Definition of Coal and Adamellite

The general Coal and Adamellite 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, Adamellite is a coarse-grained porphyritic igneous rock, a variety of Monzogranite and dominated by phenocrysts of orthoclase in a granular groundmass of perthite, plagioclase and quartz. Along with definition of Coal and Adamellite, get to know about Properties of Coal and Adamellite. Get to know more information about Coal and Adamellite origin and discoverer, etymology and class.

History of Coal and Adamellite

The history of Coal and Adamellite 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 Adamellite Origin and Discoverer

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

Etymology of Coal and Adamellite

Along with Coal and Adamellite definition, know more about the etymology of Coal and Adamellite. Etymology of Coal and Adamellite gives information about origin and formation of a particular rock. Know more about Formation of Coal and Formation of Adamellite. 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 Adamellite 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 Adamellite belongs to Igneous Rocks. The sub-class, group and other categories of Coal and Adamellite 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 Adamellite,

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