| Deposit ID | 60000298 |
|---|---|
| MRDS ID | D002948 |
| Record type | District |
| Current site name | Silver Bell District |
| Alternate or previous names | El Tiro and Oxide Open Pits, Silver Bell Copper, Silver Bell Mill, Imperial Mine, Union Mine |
| Related records | 10259563 |
| Geographic coordinates: | -111.541, 32.42041 (WGS84) |
|---|---|
| Location accuracy | 10000(meters) |
| Relative position | INFO FROM LAND.ST :1964, A UNKNOWN PRECISION |
Political divisions (FIPS codes)
Pima(county)
Arizona(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Silver Bell West(quadrangle 1:24,000 scale)
Silver Bell Mountains(quadrangle 1:100,000 scale)
Tucson(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Lower Santa Cruz(hydrologic unit)
Santa Cruz(hydrologic accounting unit)
Middle Gila(hydrologic subregion)
Lower Colorado(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Arizona | Pima |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Molybdenum | Secondary |
| Lead | Secondary |
| Gold | Secondary |
| Silver | Secondary |
| Zinc Critical | Tertiary |
| Vanadium Critical | Tertiary |
| Barium-Barite Critical | Tertiary |
| Fluorine-Fluorite Critical | Tertiary |
| Model code | 58 |
|---|---|
| USGS model code | 18a |
| Deposit model name | Porphyry Cu, skarn-related |
| Mark3 model number | 9 |
| (1) | -111.541, 32.42041 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | SILVER BELL FAULT ZONE TRENDING WNW, ENE FRACTURES AND DIKES |
| Development status | Producer |
|---|---|
| Discovery year | 1700 |
| Discoverer | Spanish Explorers |
| Year of first production | 1865 |
| District name | SILVER BELL DISTRICT |
|---|
| Type | Owner |
|---|---|
| Owner | IMPERIAL COPPER CO. |
| First year | 1903 |
| Last year | 1911 |
| Type | Owner |
|---|---|
| Owner | AMERICAN SMELTING AND REFINING COMPANY (ASARCO) |
| First year | 1915 |
| Type | Operator |
|---|---|
| Owner | AMERICAN SMELTING AND REFINING COMPANY (ASARCO) |
| First year | 1915 |
RICHARD AND COURTRIGHT, 1966, IN TITLEY AND HICKS, UNIV OF AZ PRESS.
ANDERSON, 1968, AIME GRATON-SALES VOL II.
GALEY, 1979, SOC ECON GEOL, PORPHYRY CU FIELD CONF, 18 P.
HUTTL, J., 1954, SILVER BELL: ASARCO'S NEW ARIZONA: EENGINEERING AND MINING JOURNAL, V. 155.
MINING RECORD, 1957, ARIZONA PLANT IS GETTING MORE MOLYBDENUM WITH LATE PROCESSING.
ASARCO SILVER BELL MINE BOOKLET: ASARCO INCORPORATED, SILVER BELL UNIT, SILVER BELL, ARIZONA.
PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.
PEIRCE, H.W., 1990, ARIZONA GEOLOGICAL SURVEY INDUSTRIAL MINERALS CARD FILE.
NIEMUTH, N.J., 1987, ARIZONA MINERAL DEVELOPMENT 1984-1986: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES DIRECTORY 29, 46 P.
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-83 | PETERSON, JOCELYN A. | U.S. Geological Survey | |
| Updater | 01-MAY-93 | CARBONARO, MARGUERITE M. | 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.