| Deposit ID | 10039606 |
|---|---|
| MRDS ID | M050475 |
| Record type | Site |
| Current site name | Grand Central Mine |
| Alternate or previous names | Contention-Grand Central, Little Joe Shaft |
| Geographic coordinates: | -110.06288, 31.70263 (WGS84) |
|---|---|
| Relative position | 3/4 MI. S OF TOMBSTONE |
Political divisions (FIPS codes)
Cochise(county)
Arizona(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Tombstone(quadrangle 1:24,000 scale)
Fort Huachuca(quadrangle 1:100,000 scale)
Nogales(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper San Pedro(hydrologic unit)
San Pedro-Willcox(hydrologic accounting unit)
Middle Gila(hydrologic subregion)
Lower Colorado(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Arizona | Cochise |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Gila and Salt River | 20S | 22E | 11,14 | Arizona |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Gold | Primary |
| Lead | Primary |
| Copper | Primary |
| Zinc Critical | Secondary |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite | ||||||
| |||||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Rock unit name | Bisbee Group Limestone |
| Rock description | Bisbee Group Limestone |
| (1) | Cretaceous to Late Jurassic sedimentary rocks with minor volcanic rocks |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Mine Located In Tombstone Basin. Shaft Located In N-S Tranquility Fault, Dipping 67-70se. This Fault Is Cut Withinworkings By The Grand Central Fault, Which Strikes Nw |
| General form | BEDS |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Medium |
| Significant | No |
| District name | Tombstone District |
|---|
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | Tombstone Development Co. |
| Type of workings | Underground |
|---|---|
| Length | 1524M |
| Overall depth | 137.16M |
| Overall length | 457.2M |
| Overall width | 91.44M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M050475 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0040030590 |
KEITH, S.B., 1973, ARIZONA BUREAU OF MINES BULLETIN 187, P. 74.
ABM BULL 143, 1938
KEITH, 1973, ARIZ. BUR. OF MINES BULL. 187.
| Subject category | Comment text |
|---|---|
| Deposit | ORES IN LARGE RICH OREBODIES IN FAULTED AND FRACTU RED SEGMENTS OF A LARGE DIKE, AND IN BRECCIATED FOOTWALL ZONESOF THE DIKE. ORES ALSO FOUND IN REPLACEMENTS OF LIMESTONE BEDSWHERE INTERSECTED BY "NORTHEAST" FISSURES. |
| Deposit | ONE OF THE EARLIEST AND MOST PRODUCTIVE MINES OF THE DISTRICT. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-1972 | Johnson, Maureen G. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.