Mine detail: El Boleo

Previously called ''

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Location

Lat / long:

27.2836, -112.30069

Resource(M)

Primary:	Copper, Zinc
Secondary:	Silver
Tertiary:	Manganese, Lead, Cobalt
Ore:	Atacamite, Bornite, Chalcocite, Chalcopyrite, Chrysocolla, Covellite, Cuprite, Galena, Malachite, Melaconite, Pyrolusite
Gangue:	Calcite, Chalcedony, Gypsum, Jasper, Montmorillonite
Discovery year:	1868

Production

Operation type:	Unknown
Production size:	Large
Development status:	Past Producer

Geology

Host rock:	Boleo Formation
Host type:	Meta-Argillite,Conglomerate
Structure:	Reg.Struct: Underlying Miocene Volcanics Are Cut By Normal Faults With Displacements Of 50-100 M Into A Series Of E Tilted Blocks Upon Which Post-Miocene Sediments And Tuffs Were Deposited (With Initial Dips). Section Was Later (Pliocene To Recent) Cut By En-Echelon Normal Faults Striking N 10-45 W And Dipping 65-70 Sw And Ne. Major Faults Inclined Towards The Sw, With Maximum Vertical Displacement Of 250 M (Sta. Agueda Fault). Most Faults Show Less Than 80 M Of Displacement.
Alteration processes:	Argillic

References

MRDS	MX00125
DEP	10048940
Reference	{Deposit:: GUILD, PHILIP W., 1981, PRELIMINARY METALLOGENIC MAP OF NORTH AMERICA: LISTING OF DEPOSITS: U.S. GEOLOGICAL SURVEY, GEOLOGICAL SURVEY CIRCULAR 858-B, 72 P..}{Deposit:: SALAS, G.P., 1975, CARTA Y PROVINCIAS METALOGENETICAS DE LA REPUBLICA MEXICANA: CONSEJO DE RECURSOS MINERALES PUBLICACION 21 E, P. 187.}{Deposit:: WILSON, I.F., 1956, GEOLOGIA DEL DISTRITO CUPRIFERO DEL BOLEO, BAJA CALIFORNIA IN GEOLOGIA MINERA DEL NOROESTE DE MEXICO; DEPOSITOS DE COBRE DE CANANEA, SONORA Y DE COBRE Y MANGANESO DE EL BOLEO Y LUCIFER, BAJA CALIFORNIA: CONGRESO GEOLOGICO INTERNACIONAL, XX, EXCURSIONES A-1 Y C-4, P. 53-68.}{Deposit:: WILSON, I.F., 1955, GEOLOGY AND MINERAL DEPOSITS OF THE BOLEO COPPER DISTRICT, BAJA CALIFORNIA, MEXICO: USGS PROFESSIONAL PAPER 273, 134 P.}{Deposit:: COX, D.P., AND SINGER, D.A., 1986, MINERAL DEPOSIT MODELS: USGS BULLETIN 1693, 379 P.}{Production:: WILSON, 1955; WILSON, 1956.}{Reserve-Resource:: WILSON, 1955.}
Reporter	Staude, John-Mark G. (Page, Norman J.), Leonard, Kenneth R.