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Tuff and Coal Definition


Coal and Tuff Definition


Definition

Definition
Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption   
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds   

History
  
  

Origin
Italy   
USA   

Discoverer
Unknown   
John Peter Salley   

Etymology
From a Latin word tophous then in Italian tufo and finally tuff   
From the Old English term col, which has meant mineral of fossilized carbon since the 13th century   

Class
Igneous Rocks   
Sedimentary Rocks   

Sub-Class
Durable Rock, Medium Hardness Rock   
Durable Rock, Soft Rock   

Family
  
  

Group
Volcanic   
Not Applicable   

Other Categories
Fine Grained Rock, Opaque Rock   
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock   

Texture >>
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Definition of Tuff and Coal

The general Tuff and Coal definition can be stated as: Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. 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 Tuff and Coal, get to know about Properties of Tuff and Coal. Get to know more information about Tuff and Coal origin and discoverer, etymology and class.

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History of Tuff and Coal

The history of Tuff 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.

Tuff and Coal Origin and Discoverer

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

Etymology of Tuff and Coal

Along with Tuff and Coal definition, know more about the etymology of Tuff and Coal. Etymology of Tuff and Coal gives information about origin and formation of a particular rock. Know more about Formation of Tuff and Formation of Coal. The etymology of Tuff is From a Latin word tophous then in Italian tufo and finally tuff while that of Coal is From a Latin word tophous then in Italian tufo and finally tuff. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Tuff belongs to Igneous Rocks while Coal belongs to Sedimentary Rocks. The sub-class, group and other categories of Tuff and Coal are listed below.

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