| Deposit ID | 10109798 |
|---|---|
| MRDS ID | M241502 |
| Record type | Site |
| Current site name | Reef Mine |
| Alternate or previous names | Tungsten Reef, Exposed Reef, Sitric |
| Related records | 10233922 |
| Geographic coordinates: | -110.28844, 31.42708 (WGS84) |
|---|---|
| Elevation | 2217 |
| Relative position | APPROX. CENTER AT HEAD OF CARR CANYON, ABOUT 12 MI. W OF HEREFORD, ARIZ. |
Political divisions (FIPS codes)
Cochise(county)
Arizona(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Miller Peak(quadrangle 1:24,000 scale)
Nogales(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)
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 | Cochise |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Gila and Salt River | 023S | 020E | 14,15 | Arizona |
| Commodity | Importance |
|---|---|
| Tungsten Critical | Primary |
| Gold | Primary |
| Silver | Primary |
| Quartz | Secondary |
| Lead | Tertiary |
| Copper | Tertiary |
| Zinc Critical | Tertiary |
| Tellurium Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Galena | Ore |
| Gold | Ore |
| Scheelite | Ore |
| Silver | Ore |
| Quartz | Gangue |
| Result | MINUS 5/16-IN QUARTZ/SCHEELITE AVERAGES 71% WO3. |
|---|
| Host or associated | Host | ||
|---|---|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone | ||
| Rock unit name | Abrigo Limestone | ||
| Rock description | Abrigo Limestone | ||
| |||
| (1) | -110.28844, 31.42708 |
|---|
| General form | IRREGULAR, SPORADIC BUNCHES |
|---|---|
| Strike | N5-10W |
| Dip | 10-15 SW |
| Thickness | 2.44M |
| Length | 15.24M |
| Width | 6.1M |
| Depth to top | 0M |
| Development status | Producer |
|---|---|
| Commodity type | Both |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1895 |
| Year of first production | 1875 |
| Year of last production | 1956 |
| Production years | 1916-18; 1934-42; 1953-54; 1956 |
| District name | Reef District |
|---|
| Ownership category | National Forest |
|---|
| Year | 1918 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1916-1918 | ||||||||||||||
| Material | W CONC | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Cp_Grade: ^71.6% Wo3 | ||||||||||||||
| |||||||||||||||
| Year | 1942 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1934-1942 | ||||||||||||||
| Material | W CONC | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Cp_Grade: ^71% Wo3 | ||||||||||||||
| |||||||||||||||
| Year | 1956 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1955-1956 | ||||||||||||||
| Material | W CONC | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Cp_Grade: ^74.96% Wo3 | ||||||||||||||
| |||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M241502 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0040030202 |
DALE, ET AL, 1961, USBM RI 5650.
CREASEY, S.C.,1923.
USBM FILES.
KEITH, S.B., ARIZONA BUREAU OF MINES BULLETIN 187, 1973, P. 67.
WILSON, ABM BULL 148, P. 48-49.
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
DALE - RI 5650; SAWYER AND OTHERS, 1992.
| Subject category | Comment text |
|---|---|
| Deposit | TWO PARALLEL QUARTZ VEINS. OVERALL DIMENSIONS OF THE MINERALIZED ZONES ARE: LENGTH- 3200 FT; WIDTH- 1400 FT; THICKNESS- 20 FT. IRREGULAR SPORADIC BUNCHES AND DISSEMINATIONS OF SCHEELITE WITH SOM GOLD AND SILVER VALUES AND WEAK, OXIDIZED BASE METAL SULFIDES ALONG FRACTURES AND AT JOINT INTERSECTIONS IN A QUARTZ BLANKET AT THE BASE OF THE ABRIGO LST. |
| Deposit | First Production Year: AU/AG 1870'S, W 1916 |
| Deposit | Discovery Year: 1890'S |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-1972 | Johnson, Maureen G. | U.S. Geological Survey | |
| Updater | 01-FEB-1994 | Orris, Greta J. | 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.