Types and Varieties of Coal
![bituminous coal specimen](https://rockhoundingmaps.com/wp-content/uploads/2023/10/bituminous-coal-specimen.jpg)
Coal is kind of interesting when you look at it through the lens of a rockhound. I don’t know about you but I’ve never gone digging for coal or filled a 5-gallon buck full of coal to take home with me. I’ve also never put one on a dop stick to cut a cabochon or […]