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Utopia Mine, Centennial Ridge Mining District (La Plata Mining District), Albany County, Wyoming, USAi
| Regional Level Types | |
|---|---|
| Utopia Mine | Mine |
| Centennial Ridge Mining District (La Plata Mining District) | Mining District |
| Albany County | County |
| Wyoming | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41° 17' 2'' North , 106° 9' 24'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Centennial | 270 (2011) | 2.0km |
| Elk Mountain | 196 (2017) | 49.7km |
| Rock River | 244 (2017) | 53.1km |
Structure: Mullen Creek-Nash Fork Shear Zone Flat Fault
Tectonics: Rocky Mountains
Commodity: Unverified report of Pt
Deposit: Three westerly trending drifts were opened in schists and gneisses of the Mafic Series in the early 1900's near the base of Centennial Ridge about one-quarter mile south of the Centennial Mine workings. Small amounts of gold were associated with shear zones, quartz streaks, and garnets in hornblende schists (Dart, 1929). Cross faults were supposedly responsible for cutting off the mineralized zone as was the case in the nearby Centennial tunnels. Minor amount [sic] of gold associated with decomposed hornblende in felsic veins paralleling schistosity were reported from the Utopia workings upslope from the main drifts (Hess, 1926, p. 129). Assays of samples collected from the Utopia tunnels by Dart in 1929 (p.8) range from 0-1.64 ounces of silver and a trace to 3.46 ounces of gold per ton. (McCallum, 1968, p. 10) RECORD W032146 HAS BEEN MERGED AND DELETED. QUARTZ VEINS AND SHEAR ZONES. VEIN WAS LOST BY A FAULT OFFSET; UNPUBLISHED MODEL NAME: NEW RAMBLER CU-AU-PGE.
Development: Drifts were opened in early 1900's.
Geology: Small gold bodies in quartz veins in schists are probably related to granite pegmatites
Ore(s): Fractures
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.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ 'Chlorite Group' |
| ⓘ Dolomite Formula: CaMg(CO3)2 |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Siderite Formula: FeCO3 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| C | ⓘ Siderite | FeCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Siderite | FeCO3 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Mg | Magnesium | |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Al | Aluminium | |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | Silicon | |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | Iron | |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Siderite | FeCO3 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10038156 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Great Plains DomainDomain
- Southern Rocky MountainsOrogenic Belt
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