anthracite (anthrasit)

and a. [ or bituminous coal), breaks with a conchoidal fracture, and has a deep-black color and brilliant luster. It occurs in large quantity in eastern Pennsylvania, where it is extensively mined, and is almost the exclusive fuel used in the large cities and manufactories of New York and New England. It also occurs in the South Wales coal-fields in large quantities, and in many other localities, but is IMG:content-0857.png:[blocks in formation] anthropogenic cle, also ginnabar,