| Deposit ID | 10071376 |
|---|---|
| MRDS ID | W014720 |
| MAS/MILS ID | 0300490362 |
| Record type | Site |
| Current site name | Mike Horse Mine |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -112.36262, 47.02314 (WGS84) |
| Elevation | 1728 |
| Location accuracy | 10(meters) |
Political divisions (FIPS codes)
Lewis and Clark(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Rogers Pass(quadrangle 1:24,000 scale)
Dearborn River(quadrangle 1:100,000 scale)
Choteau(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Blackfoot(hydrologic unit)
Pend Oreille(hydrologic accounting unit)
Kootenai-Pend Oreille-Spokane(hydrologic subregion)
Pacific Northwest(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 | Lewis and Clark |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Montana Principal | 015N | 006W | 28 | Montana |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Lead | Primary |
| Zinc Critical | Primary |
| Gold | Secondary |
| Copper | Secondary |
| Materials | Type of material |
|---|---|
| Galena | Ore |
| Pyrite | Ore |
| Sphalerite | Ore |
| Chalcopyrite | Ore |
| Tetrahedrite | Ore |
| Enargite | Ore |
| Polybasite | Ore |
| Calcite | Gangue |
| Host or associated | Associated | ||
|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite | ||
| Rock unit name | Diorite Intrusive (Sill);Trachyte Porphyry Dikes | ||
| Rock description | Diorite Intrusive (Sill);Trachyte Porphyry Dikes | ||
| |||
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Trachyte |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Argillite |
| Rock unit name | Algonkian Belt Series, Metamorphosed Sediments |
| Rock description | Algonkian Belt Series, Metamorphosed Sediments |
| Main Entrance (1) | -112.36262, 47.02314 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Lewis Overthrust, Boulder Batholith |
| Type of structure | Local |
| Structure description | Local Faulting Has Displaced Diorite Sill And Fractured Ore Body |
| General form | LENSES & SHOOTS (fissure veins) |
|---|---|
| Strike | N 70 W |
| Dip | 75 S |
| Thickness | 4.6M |
| Length | 304.8M |
| Width | 132.2M |
| Area | 5.6HA |
| Depth to top | 6.1M |
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Medium |
| Significant | Yes |
| Discovery year | 1898 |
| Discoverer | Joseph Heitmiller |
| Year of first production | 1915 |
| District name | Heddleston District |
|---|
| Type of mineral rights | Patented |
|---|
| Ownership category | National Forest |
|---|
| Type | Owner |
|---|---|
| Owner | Anaconda Company |
| Interest | 100 |
| Home office | Delaware |
| Year | 1977 |
| Type | Operator |
|---|---|
| Owner | N. Rogers Mining Co, |
| Home office | Box 1719, Helena, Mt. |
| Type | Owner |
|---|---|
| Owner | Asarco (American Smelting And Refining Co.) |
| Home office | 120 Broadway, New York, N.Y. |
| Type of workings | Underground |
|---|---|
| Length | 426.72M |
| Overall depth | 137.16M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W014720 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0300490362 |
PARDEE AND SCHRADER, 1933, METALLIFEROUS DEPOSITS OF THE GREATER HELENA MINING REGION, U.S. GEOLOGICAL SURVEY BULL. 842.
ROBERTSON, F., 1956, GEOCHEMICAL PROSPECTING BY SOIL ANALYSES IN MT, MT BUREAU OF MINES & GEOLOGY BULL. 7.
YOUNG, ET AL.,1962, Montana Bureau of Mines and Geology Bulletin 30, P.28
USBM MINERALS YEARBOOKS
CROWLEY,1961, Montana Bureau of Mines and Geology Bulletin 25, P.25
GEACH, 1964, Montana Bureau of Mines and Geology Bulletin 46, P.20
GEACH, 1966, Montana Bureau of Mines and Geology Bulletin 58, P.26
REYNER AND TRAUERMAN, 1949, Montana Bureau of Mines and Geology Memoir 31, p.53.
Miller, R.N., 1973, Unpublished Reprint, Geology of the Heddleston Cu-Mo Deposit L&
Unpublished Montana Bureau of Mines and Geology File Data
| Subject category | Comment text |
|---|---|
| Deposit | SUBSTANTIAL PRODUCTION AND DEVELOPMENT FROM 1940 TO 1952 |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-APR-76 | Mlynarczyk, Meg S. | U.S. Geological Survey | |
| Reporter | 27-FEB-84 | Montana Bureau Of Mines And Geology Hgm (R) | Montana Bureau of Mines and Geology | |
| Updater | 05-JAN-10 | Causey, J. Douglas | U.S. Geological Survey | combined information from DEP_ID 10148973 and deleted that record. |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:
Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.