Mine detail: Oposura

Previously called 'Las Arenillas'

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Location

Lat / long: 29.73075, -109.75342

Resource(M)

Primary: Zinc, Lead, Silver
Secondary: Copper
Tertiary: Gold, Manganese
Ore: Chalcopyrite, Galena, Rhodochrosite, Rhodonite, Sphalerite
Gangue: Calcite, Chlorite, Epidote, Fluorite, Hematite, Magnetite, Pyrite, Quartz
Orebody form: STRATIFORM, STRATABOUND LENSES

Production

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

Geology

Host rock:Arenillas Formation;Candelaria Lithic Tuff
Host type:Limestone,Tuff
Associated rock:Oposura Volcanic Group;Revancha Rhyolite
Associated type:Tuff,Dacite
Structure:Major N 20 W Trending Faults; Minor Cross-Faults: Ne, Wnw.
Alteration processes:Ubiquitous Chlorite-Epidote.

References

MRDSMX00351
DEP10049119
Reference{Deposit:: PEREZ SEGURA, EFREN, 1985, CARTA METALOGENETICA DE SONORA 1:250000 UNA INTERPRETACION DE LA METALOGENIA DE SONORA: UNIV. OF SONORA, DEPT. OF GEOL., HERMOSILLO, MEXICO, 66 P.}{Deposit:: MARRS, C.K., AND GUILBERT, J.M., 1981, GEOLOGY AND DEPOSITIONAL ENVIRONMENT OF THE OPOSURA MASSIVE SULFIDE DEPOSIT, SONORA, MEXICO IN ORTLIEB, L. AND ROLDAN Q., J., (EDS.), 1981, GEOLOGY OF NORTHWESTERN MEXICO AND SOUTHERN ARIZONA; FIELD GUIDES AND PAPERS: HERMOSILLO, MEXICO, U.N.A.M., P. 169-212.}{Deposit:: GOMEZ, H.D., 1981, PROYECTO OPOSURA IN ORTLIEB, L. AND ROLDAN Q., J., (EDS.), 1981, GEOLOGY OF NORTHWESTERN MEXICO AND SOUTHERN ARIZONA; FIELD GUIDES AND PAPERS: HERMOSILLO, MEXICO, U.N.A.M., P. 213-219.}{Deposit:: MARAVILLA S., S., 1978, MINAS EN PRODUCCION, MINAS EN PREPARACION Y DEPOSITOS CON RESERVAS MAS O MENOS CONOCIDAS EN EL ESTADO DE SONORA: PRIMERO SIMPOSIO SOBRE LA GEOLOGIA Y POTENCIAL MINERO DEL ESTADO DE SONORA, RESUMENES 1, 1978, P.87.}{Deposit:: MARRS, C.D., 1978, MINERALIZATION AND DEPOSITIONAL ENVIRONMENT OF THE OPOSURA (VOLCANOGENIC) MASSIVE SULFIDE DEPOSIT, EAST-CENTRAL SONORA, MEXICO (ABS): GSA ABSTRACTS WITH PROGRAMS, V. 10, NO. 3, P. 115-116.}{Production:: MARRS AND GUILBERT, 1981.}{Reserve-Resource:: MARAVILLA, 1978; PEREZ, 1985.}
ReporterLeonard, Kenneth R. (Page, Norman J.)