| Lat / long: | 33.07871, -109.36676 |
| Primary: | Copper |
| Secondary: | Zinc |
| Ore: | Brochantite, Chalcocite, Chalcopyrite, Malachite, Pyrite, Sphalerite |
| Gangue: | Epidote, Garnet, Hematite, Limonite, Magnetite, Pyroxene, Sericite |
| Orebody form: | DISSEMINATED |
| Discovery year: | 1892 |
| Operation type: | Unknown |
| Production size: | Medium |
| Development status: | Past Producer |
| First production started: | 1892 |
| Last production ended: | 1932 |
| Host rock: | Modoc Limestone;Morenci Shale;Longfellow Limestone |
| Host type: | Quartz Monzonite |
| Associated rock: | Morenci Granite Prophyry;Coronado Quartzite |
| Associated type: | Quartz Monzonite |
| Structure: | Ne Trending Fissure Veins Containing Rich Chalcocite Ore; Between The Humboldt Vein And Another Fissure Vein 200 Ft Distant Lies The Great Mass Of Concentrating Ore, Extensive Seam Impregnations Of The Country Rock Are Rarely Confined By Distinct Walls; Veins Cut Across Both Porphyry And Metamorphic Limestone; Vein Footwall Is Generally A Well-Defined Plane And Follows Porphyry Dikes In Some Places |
| Tectonic: | Complex Copper Mountain Fault System With Substantial Vertical Displacement; Fault Blocks Generally Downthrown To Ne; Copper Mountain Fault Cuts Across Humboldt Mine To Sw |
| Alteration processes: | Surface Oxidation Of Chalcocite Zone; Chalcocite Replace Pyrite |
| MRDS | M800409 |
| DEP | 10088900 |
| Reference | {Deposit:: ABGMT-USBM FILE DATA.}{Deposit:: BLM DISTRICT SHEET 840.}{Deposit:: USGS PP 43, P. 270-276.}{Deposit:: STEVENS, H.J., 1911, THE COPPER HANDBOOK, VOL. X, PAGES 356-358, ARIZONA COPPER CO LTD.}{Deposit:: WATT, ROBERTA, 1956, HISTORY OF MORENCI ARIZONA: M.A. THESIS, UNIVERSITY OF ARIZONA, P. 39-40.}{Deposit:: ABGMT CLIPPINGS FILE, ARIZONA COPPER CO LTD.}{Deposit:: BENNETT, 1975, GEOLOGY AND ORIGIN OF THE BRECCIAS IN THE MORENCI-METCALF DISTRICT, GREENLEE COUNTY, AZ: MS THESIS UNIV OF AZ, 153 P.}{Other Database:: CIMRI} |
| Reporter | Calder, Susan R. |