Coal and Pegmatite Definition

Definition of Coal and Pegmatite

The general Coal and Pegmatite 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, Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. Along with definition of Coal and Pegmatite, get to know about Properties of Coal and Pegmatite. Get to know more information about Coal and Pegmatite origin and discoverer, etymology and class.

History of Coal and Pegmatite

The history of Coal and Pegmatite 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 Pegmatite Origin and Discoverer

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

Etymology of Coal and Pegmatite

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

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