| Deposit ID | 10026900 |
|---|---|
| MRDS ID | M000917 |
| Record type | Site |
| Current site name | East Helvetia Deposit |
| Alternate or previous names | Rosemont |
| Geographic coordinates: | -110.75985, 31.83319 (WGS84) |
|---|---|
| Elevation | 1999 |
| Relative position | 50 KM SOUTHEAST OF TUCSON. |
Political divisions (FIPS codes)
Pima(county)
Arizona(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Helvetia(quadrangle 1:24,000 scale)
Fort Huachuca(quadrangle 1:100,000 scale)
Nogales(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Rillito(hydrologic unit)
Santa Cruz(hydrologic accounting unit)
Middle Gila(hydrologic subregion)
Lower Colorado(hydrologic region)
Federal lands
Coronado National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Arizona | Pima |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Gila and Salt River | 018S | 015E | 25,36 | SE4 (25) OF NE4 (36) | Arizona |
| Commodity | Importance |
|---|---|
| Copper Sulfide | Primary |
| Molybdenum | Secondary |
| Copper Oxide | Primary |
| Materials | Type of material |
|---|---|
| Bornite | Ore |
| Chalcocite | Ore |
| Chalcopyrite | Ore |
| Chrysocolla | Ore |
| Cuprite | Ore |
| Malachite | Ore |
| Molybdenite | Ore |
| Pyrite | Ore |
| Biotite | Gangue |
| Result | 0.016-0.017% MO |
|---|
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Quartz Monzonite | ||||
| Rock unit name | Greaterville Intrusives | ||||
| Rock description | Greaterville Intrusives | ||||
| |||||
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Metasedimentary Rock > Quartzite |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Rock unit name | Horquilla Limestone;Scherrer Formation, Concha Limestone;Bisbee Group |
| Rock description | Horquilla Limestone;Scherrer Formation, Concha Limestone;Bisbee Group |
| (1) | -110.75985, 31.83319 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Flat Thrust Fault Separating Paleozoic Limestones From Overlying B Isbee Group |
| Depth to top | 91.44M |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Medium |
| Significant | No |
| Discovery year | 1961 |
| Year of first production | 1875 |
| Year of last production | 1959 |
| District name | Helvetia-Rosemont District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | Coronado National Forest |
| Type | Owner-Operator |
|---|---|
| Owner | Asarco (American Smelting And Refining Co.) |
| First year | 1988 |
| Type | In-situ | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1977 | |||||||||||||||||||||
| Total resources | 162947000mt ore | |||||||||||||||||||||
| ||||||||||||||||||||||
| Type | In-situ | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1988 | ||||||||||||||||||||||||||||
| Total resources | 126984000mt ore | ||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M000917 |
DREWES, 1971, USGS MAP I-613.
JIM KELLY, ANAMAX MINING CO (PERSONAL COMMUN. TO JAN WILT).
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.
CIMRI
SAWYER AND OTHERS, 1992.
| Subject category | Comment text |
|---|---|
| Deposit | OVERLAIN BY 300 FT OF CRET SEDIMENTS ON WEST AND BY 1200 FT ON EAST. PORPHYRY IS NOT VERY MINERALIZED. |
| Deposit | THIS REPORT WAS TAKEN FROM RECORD M000917 OF JAN WILT IN MOLYBDENU M FILE, CONTACT PERSON T.G. THEODORE, USGS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1983 | Peterson, Jocelyn A. | U.S. Geological Survey | |
| Updater | 01-DEC-1993 | Orris, Greta J. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:
Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.