Cannel coal is a type of coal known for its high oil content and easy ignition. The spelling of "cannel" may be confusing to some, but it is pronounced /ˈkænl/ (KAN-uhl). The double "n" is indicative of its origin from the Old English word "canna," meaning reed, which reflects the reed-like appearance of the coal. Despite its spelling, cannel coal has been used as a valuable fuel source in various industries, including glassmaking and lighting.
Cannel coal is a type of bituminous coal that has unique characteristics distinguishing it from other forms of coal. It is a fossil fuel formed from the remains of plants that lived and decayed millions of years ago. The term "cannel" is derived from the Latin word "canna," meaning reed or cane, which alludes to the resemblance of the coal to a dense and compacted mass of plant material.
Cannel coal is characterized by its high carbon content, typically ranging from 85% to 95%, and low mineral content, especially ash. This makes it burn with a bright flame and high heat intensity, making it a valuable fuel source. Another notable feature of cannel coal is its relatively low sulfur content, which reduces air pollution when burnt.
In terms of appearance, cannel coal is often black and lustrous, with a fine-grained texture and a distinctive silky sheen. It possesses a high organic hydrogen content, which contributes to its excellent combustion properties. Its dense structure and relatively low volatility also make it resistant to breakage and shattering. These properties make cannel coal particularly beneficial in industries such as glassmaking, where a clean-burning fuel with specific qualities is required.
Due to its exceptional properties, cannel coal has historically been highly regarded and valued. However, its usage has significantly decreased over time as alternative energy sources have become more prevalent. Nevertheless, it remains an important part of the coal industry and continues to be used in niche applications where its particular qualities are advantageous.
A hard, black, inflammable coal, known to the Scotch miners as parrot-coal-chiefly used for the manufacture of gas.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "cannel" in "cannel coal" comes from the Old English word "cannel", which means "candle". This is because when "cannel coal" is lit, it burns with a bright, steady flame similar to that of a candle. So, the name "cannel coal" is derived from its resemblance to a candle when burning.