| Lat / long: | 31.86683, -110.78398 |
| Primary: | Copper |
| Secondary: | Zinc, Silver |
| Tertiary: | Molybdenum, Tungsten |
| Discovery year: | 1861 |
| Operation type: | Unknown |
| Deposit type: | SKARN, PYROMETASOMATIC |
| Production size: | Medium |
| Development status: | Past Producer |
| First production started: | 1870 |
| Structure: | BACKBONE FAULT-- A COMPLEX ZONE CONSISTING OF THRUST FAULTS, HIGH-ANGLE NORMAL AND REVERSE FAULTS, TEAR FAULTS; FOLDING |
| Alteration processes: | CONTACT PYROMETASOMATIC (SKARNIFICATION), SILICIFICATION, ARGILLIZATION, PYRITIZATION |
| MRDS | D000804 |
| DEP | 60000203 |
| Reference | {Deposit:: LEMMON, D.M., UNPUBLISHED DATA.}{Deposit:: LEMMON, D.M., AND TWETO, O.L., 1962, TUNGSTEN IN THE U.S., USGS MAP, MR-25.}{Deposit:: SAWYER, M.B., GURMENDI, A.C., DALEY, M.R., AND HOWELL, S.B., 1992, PRINCIPAL DEPOSITS OF STRATEGIC AND CRITICAL MINERALS IN ARIZONA: U.S. BUREAU OF MINES SPECIAL PUBLICATION, 334 P.}{Deposit:: ANZALONE, S.A., AND BROWN, R.L., 1992, GEOLOGYOF THE HELVETIA COPPER DEPOSIT--ARIZONA: SOCIETY FOR MINING, METALLURGY, AND EXPLORATION, INC. PREPRINT NO. 92-61, 5 P.} |