An iron mine with a rich history. Started 1828 and most recently owned by Sidermex Group. Produced 443,000 tons of concentrates in 1984. In the northern part of the city of Durango.
References:Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 886.
Mining Annual Review (1985): 81.
Panczner (1987).
http://www.terrapub.co.jp/journals/EPS/pdf/2001/5303/53030181.pdf.
Megaw, P.K.M. & Barton, M.D. (1999) The geology and minerals of Cerro de Mercado, Durango, Mexico. Rocks & Minerals, Jan.
24 entries listed. 17 valid minerals.