Mine detail: Safford Deposit

Previously called 'Kennecott SaffordLone Star Mine'

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Location

Lat / long: 32.94177, -109.60565

Resource(M)

Primary: Molybdenum, Copper
Secondary: Gold, Silver, Lead, Zinc
Ore: Antlerite, Bornite, Brochantite, Chalcanthite, Chalcocite, Chalcopyrite, Chrysocolla, Covellite, Cuprite, Galena, Gold, Malachite, Molybdenite, Pyrite, Sphalerite, Tenorite, Tetrahedrite, Turquoise
Gangue: Alunite, Goethite, Hematite, Jarosite, Limonite, Magnetite, Quartz
Discovery year: 1899

Production

Operation type: Surface-Underground
Deposit type: Porphyry Cu
Production size: None
Development status: Past Producer
Production years: 1899-1939

Geology

Host type:Diorite,Rhyolite,Dacite,Latite
Associated rock:Lone Star Pluton
Associated type:Quartz Monzonite,Diorite
Structure:Lone Star Shear Zone 6000 Ft Wide And 16,000 Ft Long, Strikes N50- 65e, Steep To Vertical Dip
Alteration processes:4 Hypogene Alteration Zones 1) Seritization & Silicification In Rhyolite, Latite, Quartz Latite, 2) Biotization In Andesite, 3) Chloritization, 4) Propylitic Alteration. Ore Body Is In Zones 1) & 2). Supergene Enrichment Has Taken Place To Average Depth Of 440 Ft

References

MRDSM001755
DEP10027031
Reference{Deposit:: Robinson, R.F. & A. Cook (1966), The Safford copper deposit, Lone Star mining district, Graham County, Arizona, in S.R. Titley and C.L. Hicks (editors), Geology of the porphyry copper deposits, southwestern North America, University of Arizona Press, Tucson: 251-266.}{Deposit:: Dunn, P.G. (1978) Geologic structure of the Safford district, Arizona, in Jenney, J.P., and Hauck, H.R., eds., Proceedings of the Porphyry Copper Symposium, Tucson, Arizona, March 18-20, 1976: Arizona Geological Society Digest: 11: 9-15.}{Deposit:: Cook And Robinson, 1962, N. Mex. Geol. Soc. 13th Field Conf. Guidebook.}{Deposit:: Horsnail, R.F. (1978) Safford district, Graham County, Arizona, in Lovering, R.G., and McCarthy, J.H., Jr., eds., Conceptual models in exploration geochemistry; the Basin and Range Province of the western United States and northern Mexico: Journal of Geochemical Exploration: 9(2-3): 151-153, 241-243.}{Deposit:: USGS Pp 424-C, P. 151-153.}{Deposit:: Abm Bull 180, P. 230-238.}{Deposit:: Yarter, W.V. (1981) Geology, geochemistry, alteration, and mass transfer in the Sol prospect, a sub-economic porphyry copper-molybdenum deposit, Safford district, Graham County, Arizona: Tucson, University of Arizona, M.S. thesis, 136 p.}{Deposit:: Admr Sr No 2, P. 83-87.}{Deposit:: Laine, 1974, M.S. Thesis, Univ Of Az.}{Deposit:: Bolin, 1976, M.S. Thesi S, Univ Of Az.}{Deposit:: Dewhurst, 1976, M.S. Thesis, Univ Of Az.}{Deposit:: Valentine, 19??, M.S. Thesis, Univ Of Utah.}{Deposit:: World Mining, V. 29, No. 4, P. 139.}{Geology:: Langton J M, Williams S A 1982 - Structural, petrological and mineralogical controls for the Dos Pobres orebody, Lone Star Mining District, Graham County, Arizona: in Titley S R 1983 Advances in Geology of the Porphyry Copper Deposits, Southwestern North America University of Arizona Press, Tucson pp 335-352}{Other Database:: Cimri}{Reserve-Resource:: World Mining, 1974, P. 139.}
ReporterPeterson, Jocelyn A., Orris, Greta J.