Mine Report


Mines Menu: Mines Map Use the links at the left to return.
Mine Report
Four Metals Mine
1909 photo 2026-01-25 photo by Mike Bertram Extract from 1914 map, mine location is #13. Part of 1974 geological map⁸ 2017 Allegiant map¹⁰ Mining District and Mines Patagonia District - aka Guajolte, Gross, Four Metals Mining Co.¹; Guajolote Lode, Red Hill Crosscut, Phoenix Claims, Hillside Claims, Red Mountain Mine, Frisco, Group.³ OWNERS AND OPERATORS INCLUDED CORONADO MINES INC, G. GROSS, FOUR METALS MINING CO, KINO COPPER CO;⁶ Location ⁶ center of sec. 23S 16E W. Cen. 29¹ Lower Platform: 31.3972, -110.7369³ Upper Platform: 31.3986, -110.7367³ Mineral Products Cu, Ag, Au, Pb-, Zn-¹ Rhodochrosite (Manganese Carbonate) - see https://www.mindat.org/photo-1319529.html Hemimorphite (a mineral consisting of hydrated zinc silicate, typically occurring as flat white prisms.) - see https://www.mindat.org/loc-34206.html. Marcasite (iron sulfide mineral) - see https://www.mindat.org/min-2571.html Pyrite (iron sulfide mineral) - see https://www.mindat.org/photo-995771.html Geology Sheeted, shattered, cushed and strongly altered Laramide granodiorite, mineralized with pyrite, chalcopyrite, chalcocite, and minor galena, and possibly sphalerite, occuring as dispersed grains or aggragate masses in a quartz stockwork or as fissure fillings. Mineralization mostly low grade.¹ ⁶ Type of Operation and Production ⁶ ⁶ Extensive tunnel operations. Only a few tons of picked ore shipped which ran about 7% Cu, 40 oz. Ag/T and 0.1 oz Au/T¹. MINERAL APPRAISAL OF CORONADO NATIONAL FOREST, PART 7 PATAGONIA MOUNTAINS-CANELO HILLS UNIT, COCHISE AND SANTA CRUZ COUNTIES, ARIZONA by Mark L. Chatman MLA 22-94 1994 U.S. DEPARTMENT OF THE INTERIOR BUREAU OF MINES Economics.--It should be noted that the most recent data used by USBM for this analysis are the coring study results from Noranda Mines, Ltd., circa mid-1960's. Metallic Ventures, Inc.'s (Tucson, AZ) early 1990's plan to open-pit mine the deposit may well be based on more recent, more favorable data. No such data were available to the USBM for this analysis. The deposit could be mined by either open-pit or underground (stoping) methods. Economic modeling with data available to USBM suggests neither method would be profitable with the late 1993 copper price of $1.00/lb. An open-pit development of the supergene enrichment zone would be the least expensive mining method, but would result in high overall losses (a negative $47 million NPV at a 15% ROR). The deposit is too small to pay for infrastructure that would allow a high-tonnage mining rate, and too low in grade to support mining over a period of a decade or more. ⁹ HENKLE & ASSOCIATES Consulting Geologists / Environmental Managers RESOURCE ESTIMATE FOUR METALS COPPER PROJECT SANTA CRUZ COUNTY, ARIZONA, USA PREPARED FOR NEWMEX MINERALS, INC., Calcary, Alberta, 3/14/2001 Henkle and Associates resource estimate for the Four Metals property is 8,280,084 tons at a grade of 0.58%, containing 48,236 tons in- the-ground, of copper metal, (measured and indicated categories).⁵ Photos from 2026-01-25 Lower Platform Tailings Pile Lower Platform rail and debris Upper Platform area Upper Platform possible tunnel entrance Mining Claim Corner References Index of Mining Properties in Santa Cruz County, Arizona, by Staton B. Keith, Bulletin 191, Arizona Geological Survey, 1975. Mindat.org - small amount of data Mike Bertram 2026-01-25 Mineral Appraisal of Coronado National Forest, Part 7 - Patagonia Mountains - Canelo Hills Unit by Mark Chatman, 1994, No entry Arizona Department of Mines report: http://docs.azgs.az.gov/OnlineAccessMineFiles/G-L/HardshellSantacruz17c.pdf The Mineral Deposits of the Santa Rita and Patagonia Mountains by Frank C. Schrader, 1914 Baker R. C., 1961, Geology and ore deposits of the southeast portion of the Patagonia Mountains, Arizona; Univ. Mich. PhD thesis. Geologic map and sections of the Nogales and Lochiel quadrangles, Santa Cruz County, Arizona, Simons F. S., 1974, https://ngmdb.usgs.gov/Prodesc/proddesc_9516.htm Arizona Department of Mines report: http://docs.azgs.az.gov/OnlineAccessMineFiles/C-F/FourmetalsSantacruz119.pdf Allegiant Four Metals Project - https://allegiantgold.com/en/projects/four-metals/ Acknowledgements Ernie Parks provided help in accessing the 1909 photos.