Bridger Mine, Encampment Mining District, Carbon County, Wyoming, USAi
| Regional Level Types | |
|---|---|
| Bridger Mine | Mine |
| Encampment Mining District | Mining District |
| Carbon County | County |
| Wyoming | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41° 18' 20'' North , 107° 9' 2'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Encampment | 438 (2017) | 32.0km |
| Saratoga | 1,677 (2017) | 33.2km |
| Sinclair | 413 (2017) | 52.2km |
| Rawlins | 9,040 (2017) | 54.4km |
Silver and gold. Also tellurium and selenium.
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. 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. 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. Terry Klein (USGS) also references Sutherland and Hausel, 1999, unpublished field notes. Shaft located and labeled on 1:24K USGS topo, described by Spencer (1904) 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 Au 111 ppb; Ag 200 ppm; Cu 2089 ppm; Pb 1497 ppm; Zn 602 ppm; Ni 16 ppm; Sutherland and Hausel, 1999 unpublished field notes. Vein conformable to regional foliation trending NW, dip 25 - 55 degrees SW Vein trends NW, dips 25 to 55SW. Mineralized zone is 1 to 4 ft. wide. Quartz vein is 0.5 to 3 ft. wide.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
7 valid minerals.
Detailed Mineral List:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chalcocite Formula: Cu2S |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ 'K Feldspar' |
| ⓘ 'Limonite' |
| ⓘ Native Gold Formula: Au |
| ⓘ Native Silver Formula: Ag |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Native Silver | 1.AA.05 | Ag |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'K Feldspar' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Chalcocite | Cu2S |
| S | ⓘ Galena | PbS |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Chalcocite | Cu2S |
| Ag | Silver | |
| Ag | ⓘ Native Silver | Ag |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10254793 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Southern Rocky MountainsOrogenic Belt
- Wyoming DomainDomain
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References
Osterwald, F.W., Osterwald, D.B., Long, J.S. Jr., Wilson, W. H. (1966) Mineral Resources Of Wyoming. Bulletin 50. Wyoming Geological Survey pages 45, 82, 125, 193
Hausel, W. Dan (1989) The Geology Of Wyoming’s Precious Metal Lode And Placer Deposits. Bulletin 68. Wyoming Geological Survey p.152
Hausel, W. Dan (1997) Copper, Lead, Zinc, Molybdenum, And Associated Metal Deposits Of Wyoming. Bulletin 70. Wyoming Geological Survey p.159
