I stumbled upon this rather interesting article about coal on the "geology.com" website.
I was surprised to learn that there is a lot of minute wood particles still in a lot of coal. Anyhow, the article is called,
Coal Through a Microscope
It's far more than a black rock!
http://geology.com/articles/coal-through-a-microscope.shtml
I was surprised to learn that there is a lot of minute wood particles still in a lot of coal. Anyhow, the article is called,
Coal Through a Microscope
It's far more than a black rock!
http://geology.com/articles/coal-through-a-microscope.shtml