| Deposit ID | 10283253 |
|---|---|
| MRDS ID | M241495 |
| MAS/MILS ID | 0040150715 |
| Record type | Site |
| Current site name | Portland Mine |
| Related records | 10088844 |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -114.51331, 35.38081 (WGS84) |
| Elevation | 622 |
| Location accuracy | 500(meters) |
Political divisions (FIPS codes)
Mohave(county)
Arizona(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Spirit Mountain NE(quadrangle 1:24,000 scale)
Davis Dam(quadrangle 1:100,000 scale)
Kingman(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Havasu-Mohave Lakes(hydrologic unit)
Lower Colorado(hydrologic accounting unit)
Lower Colorado(hydrologic subregion)
Lower Colorado(hydrologic region)
Federal lands
Bureau of Land Management(Bureau of Land Management AZ)
Bureau of Land Management AZ BLM(Type of land area)
BLM(Federal land areas administered by BLM)
| Country | State | County |
|---|---|---|
| United States | Arizona | Mohave |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Gila and Salt River | 023 N | 021 W | 15 | NENESE | Arizona |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Secondary |
| Materials | Type of material |
|---|---|
| Gold | Unknown |
| Ore Body (1) | -114.51331, 35.38081 |
|---|
| Thickness | 49M | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length | 366M | ||||||||||||||
| Width | 3.7M | ||||||||||||||
| |||||||||||||||
| Operation type | Surface-Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1920 |
| District name | Black Mountain District |
|---|
| Ownership category | National Recreation Area |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Western States Minerals Corp. |
| ID | 0202145 |
| Year | 1988 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0040150715 | |
| USGS | Mineral Resources Data System | MRDS | M241495 | MAS references MRDS |
| Mine Safety and Health Administration | MSHA | MSHA | 0202145 |
NIEMUTH, N.J. ARIZONA MINERAL DEVELOPMENT 1984-1986. AZ
DEP. MINES AND MINER. RESOUR., REP. D-29(87), 1987, 46 PP.
ADMR PORTLAND MINE FILE
GARDNER E D GOLD MINING AND MILLING IN THE BLACK MTS
USGS IC 6901 1936 P 48
BLM ARIZONA MINING CLAIMS NO 28157
ALSO IN SEC 14
| Subject category | Comment text |
|---|---|
| Deposit | PROPERTY ALSO UNDER USGS MRDS ID NO. M241460. INITIAL PRODUCTION WAS SOMETIME IN THE PERIOD 1931-1941. ALTERATION ZONES WERE DRILLED IN 1984-86 TO EXPAND RESERVE BASE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 23-SEP-1991 | Gosling | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Active since 10/01/2011 |
|---|---|
| MSHA mine ID | 0202145 |
| Mine name (MSHA) | Black Rock Mine |
| Current operator | Western Mining and Minerals, Inc. |
| Current controller (parent) | Saint-Gobain |
| 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.