'Columbite-(Fe)-Columbite-(Mn) Series' (not an IMA approved species)
Comments:
See further under euxenite-Y. In the 1980's I was on a re-scraped portion of an old unpaved mine road access to this mine, and I found on the road a chunk of pegmatite about six inches across that had splotches and streaks of sub-metallic black columbiteSee further under euxenite-Y. In the 1980's I was on a re-scraped portion of an old unpaved mine road access to this mine, and I found on the road a chunk of pegmatite about six inches across that had splotches and streaks of sub-metallic black columbite