| Deposit ID | 10161238 |
|---|---|
| MRDS ID | M241057 |
| MAS/MILS ID | 0040030067 |
| Record type | Site |
| Current site name | Cobre Loma |
| Alternate or previous names | Cobre Loma Pit, Coronado Nf Dragoon Unit |
| Related records | 10104061 |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -109.96376, 31.89123 (WGS84) |
| Elevation | 1780 |
| Location accuracy | 10(meters) |
Political divisions (FIPS codes)
Cochise(county)
Arizona(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Cochise Stronghold(quadrangle 1:24,000 scale)
Chiricahua Peak(quadrangle 1:100,000 scale)
Douglas(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Willcox Playa(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 | 018 S | 023 E | 11 | NE | Arizona |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Main Entrance (1) | -109.96376, 31.89123 |
|---|
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1915 |
| District name | Middle Pass District |
|---|
| Ownership category | National Forest |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Cobre Loma Mining Co |
| ID | 201836 |
| Interest | 100 |
| Home office | Arizona |
| Year | 1978 |
| Year | 1915 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Description | Copper Ore 4500 Mt | ||||||||||||||
| |||||||||||||||
| Year | 1920 |
|---|---|
| Description | Last Year For Production In Record 001 |
| Type | In-situ | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1994 | |||||||||||||||||||||
| Total resources | 4500mt ore | |||||||||||||||||||||
| ||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0040030067 | |
| USGS | Mineral Resources Data System | MRDS | M241057 | MAS references MRDS |
| Mine Safety and Health Administration | MSHA | MSHA | 0201836 |
INNES, D. G. AND ASSOC, LTD., 1982, UNPUB. GEOL. REPORT ON
MIDDLEMARCH PROPERTY, PART OF ADMMR FILES, P. 2.
MAHONEY, C. G., 1942, USBM, UNPUB. WAR MINERALS MEMO ON
MIDDLEMARCH COPPER MINE, P. 4.
CHATMAN, M. L., 1993, USBM OFR MLA 30-93, P. 23-24, D79.
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 21-JAN-1994 | Intermountain Field Operations Center (IFOC) | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 06/29/1978 |
|---|---|
| MSHA mine ID | 0201836 |
| Mine name (MSHA) | Cobre Loma Pit |
| Current operator | Cobre Loma Mining Company |
| Mine type | Surface (Metal / non-metal) |
MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.