| Deposit ID | 10294931 |
|---|---|
| MAS/MILS ID | 0300450041 |
| Record type | Site |
| Current site name | American Yogo Sapphire Mine |
| Alternate or previous names | American Sapphire, Yogo Lapidary Co. Mine, Sapphire Intl. Corp. Mine |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -110.34473, 46.87101 (WGS84) |
| Elevation | 1631 |
| Location accuracy | 10(meters) |
Political divisions (FIPS codes)
Judith Basin(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Indian Hill(quadrangle 1:24,000 scale)
White Sulphur Springs(quadrangle 1:100,000 scale)
White Sulphur Springs(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Judith(hydrologic unit)
Fort Peck Lake(hydrologic accounting unit)
Missouri-Musselshell(hydrologic subregion)
Missouri(hydrologic region)
Federal lands
Helena-Lewis and Clark National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Montana | Judith Basin |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Montana Principal | 013 N | 011 E | 21 | C W2W2 | Montana |
| Commodity | Importance |
|---|---|
| Sapphire | Primary |
| Main Entrance (1) | -110.34473, 46.87101 |
|---|
| Operation type | Underground |
|---|---|
| Development status | Producer |
| Commodity type | Non-metallic |
| Significant | No |
| Discovery year | 1896 |
| Ownership category | National Forest |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Bullock Exploration, Inc. Aurora, Co |
| ID | 2400775 |
| Home office | Colorado |
| Year | 1982 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0300450041 | |
| Mine Safety and Health Administration | MSHA | MSHA | 2400775 |
U.S. BUREAU OF MINES IC 7602, 1951, P. 43-44.
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 08-OCT-91 | Ridenour, James | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 02/24/2026 |
|---|---|
| MSHA mine ID | 2400775 |
| Mine name (MSHA) | YOGO SAPPHIRE MINE |
| Current operator | Yogold U.S.A. Corporation |
| Current controller (parent) | Jerod Edington |
| Mine type | Underground (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.