| Deposit ID | 10254793 |
|---|---|
| MAS/MILS ID | 560070309 |
| Record type | Site |
| Current site name | Bridger Mine |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -107.1508, 41.3058 (WGS84) |
| Elevation | 2633 |
| Location accuracy | 10(meters) |
Political divisions (FIPS codes)
Carbon(county)
Wyoming(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Divide Peak(quadrangle 1:24,000 scale)
Baggs(quadrangle 1:100,000 scale)
Rawlins(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Little Snake(hydrologic unit)
White-Yampa(hydrologic accounting unit)
White-Yampa(hydrologic subregion)
Upper Colorado(hydrologic region)
Federal lands
Medicine Bow-Routt National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Wyoming | Carbon |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 6th Principal | 15N | 087W | 2 | N2 of NW | Wyoming |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Gold | Primary |
| Lead | Primary |
| Copper | Secondary |
| Zinc Critical | Secondary |
| Tellurium Critical | Tertiary |
| Nickel Critical | Tertiary |
| Selenium | Tertiary |
| Materials | Type of material |
|---|---|
| Galena | Ore |
| Chalcocite | Ore |
| Gold | Ore |
| Silver | Ore |
| Quartz | Gangue |
| Calcite | Gangue |
| Result | Assays range from a trace to 69 opt Au. Gold values are greater near the surface, silver values increase with depth. A 100 lb. sample representing the average of the streak is reported to have assayed 90 oz silver and $5 gold per ton (0.26 opt) (as of 1904). |
|---|
| Main Entrance (1) | -107.1508, 41.3058 |
|---|
| Operation type | Surface-Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1876 |
| Type of mineral rights | Patented |
|---|
| Ownership category | National Forest |
|---|
| Type | Owner |
|---|---|
| Owner | Jack and Dorothy Sintek |
| Home office | PO Box 517 Saratoga, WY 82331 jsintek@usnion-tel.com |
| Year | 2008 |
| Type of workings | Underground |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 560070309 |
Medicine Bow National Forest, Wyoming, AML Inventory, [undated]: U.S. Bureau of Mines unpublished and undated inventory available at the USDA Forest Service office in Saratoga, WY.
Osterwald and others, 1966, Mineral Resources of Wyoming: Geological Survey of Wyoming Bull. 50 [revised ed.], p. 45, 82, 125, 193.
Osterwald and others, 1959, Mineral Resources of Wyoming: Geological Survey of Wyoming Bull. 50, p. 41, 76, 112, 173.
Hausel, 1997, Copper, lead, zinc, molybdenum, and associated metal deposits of Wyoming: Wyoming State Geological Survey Bull. 70, p. 159.
Spencer, 1904, Copper deposits of the Encampment District, Wyoming: USGS PP-25, p. 99-100.
Hausel, 1989, The geology of Wyoming's precious metal lode and placer deposits: Geological Survey of Wyoming Bull. 68, p. 152.
Wilson and others, 2001, USGS OFR-01-497.
| Subject category | Comment text |
|---|---|
| Deposit | Site visited in Sept. 2008 by Anna Wilson and Bill Heran, USGS. The owners for the previous 20 to 30 years, Jack and Dorothy Sintek (from Saratoga, WY) showed us around the property. |
| Deposit | In Sept. 2008, the main shaft on the Wicked Slope claim was caved and enclosed in a falling down log structure. All the dump material had been used by the Sinteks and their neighbor as driveway fill. |
| Deposit | Terry Klein's updates appear not to have been entered into newMRDS. 0.5-4 ft wide sulfide- & calcite-bearing qtz vein in qtzite; altered zones (6"-3' wide) in both hanging- and foot-wall; Au decreases & Ag increases with depth. Vein enclosed by narrow alteration zone. Vein conformable to regional foliation trending NW, dip 25 - 55 degrees SW. Highly mineralized silicification 10 in wide on hanging wall, 4 - 10 in wide on footwall. mine lies near qtzite contact with overlying metagabbro. |
| Deposit | Terry Klein (USGS) also references Sutherland and Hausel, 1999, unpublished field notes. |
| Deposit | Shaft located and labeled on 1:24K USGS topo, described by Spencer (1904) |
| Deposit | Hanging wall = Au trace to 69 oz/ton; Middle silicified qtzite = Ag 90 oz/ton; & Au 0.26 oz/ton; Spencer, 1904, p.100. Au 111 ppb; Ag 200 ppm; Cu 2089 ppm; Pb 1497 ppm; Zn 602 ppm; Ni 16 ppm; Sutherland and Hausel, 1999 unpublished field notes. |
| Deposit | Vein conformable to regional foliation trending NW, dip 25 - 55 degrees SW |
| Deposit | Vein trends NW, dips 25 to 55SW. Mineralized zone is 1 to 4 ft. wide. Quartz vein is 0.5 to 3 ft. wide. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 1983-11-18 | Intermountain Field Operations Center (IFOC) | U.S. Bureau of Mines | |
| Updater | 2008-10-29 | Wilson, Anna B. | U.S. Geological Survey | revised 16-oct-2012 |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.