Mine detail: El Boleo

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Location: Baja California Sur, Mexico, North America
Lat / long: 27.2836, -112.30069
dep_id: 10048940
mrds_id: MX00125
Commodity type: metallic
Major mineral: Copper, Zinc
Minor mineral: Silver
Trace mineral: Manganese, Lead, Cobalt
Operation type: Unknown
Production size: Large ammount of material produced
Development status: Past Producer
ore: Atacamite, Bornite, Chalcocite, Chalcopyrite, Chrysocolla, Covellite, Cuprite, Galena, Malachite, Melaconite, Pyrolusite
gangue: Calcite, Chalcedony, Gypsum, Jasper, Montmorillonite
work_type: Surface/Underground
model: 87: Basaltic Cu (BC name is Volcanic redbed Cu)
alteration: Argillic
Reporter: Staude, John-Mark G. (Page, Norman J.), Leonard, Kenneth R.
hrock_unit: Boleo Formation
hrock_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.
disc_yr: 1868
References:
  • 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.
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