| Deposit ID | 10111253 |
|---|---|
| MRDS ID | W026553 |
| Record type | Site |
| Current site name | Regal Mine |
| Alternate or previous names | Keystone Mine |
| Related records | 10124444 |
| Geographic coordinates: | -112.42615, 45.17157 (WGS84) |
|---|---|
| Elevation | 1981 |
| Relative position | 10.7 MI S74E OF DILLON |
Political divisions (FIPS codes)
Madison(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Christensen Ranch(quadrangle 1:24,000 scale)
Dillon(quadrangle 1:100,000 scale)
Dillon(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Beaverhead(hydrologic unit)
Missouri Headwaters(hydrologic accounting unit)
Missouri Headwaters(hydrologic subregion)
Missouri(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Montana | Madison |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Montana Principal | 008S | 007W | 02 | CENTER OF N2 | Montana |
| Commodity | Importance |
|---|---|
| Talc-Soapstone | Primary |
| Materials | Type of material |
|---|---|
| Talc | Ore |
| Dolomite | Gangue |
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase | ||||||||
| Rock unit name | Diabase | ||||||||
| Rock description | Diabase | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Metasedimentary Rock > Marble |
| Rock unit name | Pre Belt |
| Rock description | Pre Belt |
| (1) | -112.42615, 45.17157 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Deposit Close To Core Of Tightly Refolded Synform |
| Type of structure | Local |
| Structure description | Many Faults Cut Ore Body |
| General form | LENSE |
|---|---|
| Strike | NE |
| Dip | 50 N |
| Length | 228.6M |
| Width | 91.44M |
| Depth to bottom | 9.14M |
| Development status | Producer |
|---|---|
| Commodity type | Non-metallic |
| Deposit size | Medium |
| Significant | No |
| District name | Ruby Range |
|---|
| Ownership category | Private |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Pfizer, Inc. |
| Type of workings | Surface/Underground |
|---|---|
| Area | 0.324HA |
| Length | 91.44M |
| Overall depth | 18.29M |
| Overall length | 137.16M |
| Overall width | 22.86M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W026553 |
OLSON, R. H., 1976 , THE GEOLOGY OF MONTANA TALC DEPOSITS IN ELEVENTH INDUSTRIAL MINERALS FORUM: MONTANA BUREAU OF MINES AND GEOLOGY SPECIAL PUBLICATION 74 , P. 126
| Subject category | Comment text |
|---|---|
| Deposit | 30 FT IS DEPTH OF PIT - TALC MAY EXTEND TO GREATER DEPTH |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JUN-1977 | Berg, Richard B. (Krohn, D. H.) | U.S. Geological Survey | |
| Updater | 01-FEB-1985 | Loen, Jeffrey S. (Pearson, Robert C.) | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Active since 07/23/2020 |
|---|---|
| MSHA mine ID | 2401994 |
| Mine name (MSHA) | Regal Mine |
| Current operator | ELEVATION NEWCO LLC |
| Current controller (parent) | Riverspan Partners LP |
| Mine type | Surface (Metal / non-metal) |
Inferred by coordinate + name similarity (1397 m, 1.00 match). Confirm against MSHA if precision matters — non-USGS-curated cross-references may occasionally point at a neighbouring mine.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.