Red oxyde of Iron
Velvety and mamillated red oxide of Iron is not so common as the smooth superficially black or brown hydro-oxyde of tab. 431, we, therefore, do not pass such a beautiful variety over; the powder being red of the one, and brown of the other, is the distinctive mark and very decisive, although overlooked until pointed out by the Count D’Bournon. The present specimen is from Lancashire; it is a valuable ore.
The brown oxyde is not, as I know of, valued by the smelter, as it would require more pains and fuel to reduce it, and produce less metal.