Sandstone and Coal Definition

Definition of Sandstone and Coal

The general Sandstone and Coal definition can be stated as: Sandstone is defined as a rock which is composed of sand-sized grains of various minerals mostly of uniform size and often are smooth and rounded. On the other hand, Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds. Along with definition of Sandstone and Coal, get to know about Properties of Sandstone and Coal. Get to know more information about Sandstone and Coal origin and discoverer, etymology and class.

History of Sandstone and Coal

The history of Sandstone and Coal 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.

Sandstone and Coal Origin and Discoverer

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

Etymology of Sandstone and Coal

Along with Sandstone and Coal definition, know more about the etymology of Sandstone and Coal. Etymology of Sandstone and Coal gives information about origin and formation of a particular rock. Know more about Formation of Sandstone and Formation of Coal. The etymology of Sandstone is From its composition, sand and stone while that of Coal is From its composition, sand and stone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Sandstone and Coal belong to Sedimentary Rocks. The sub-class, group and other categories of Sandstone and Coal are listed below.

For Sandstone,

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

For Coal,

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