Dee North Mine, Bootstrap Mining District, Elko County, Nevada, USAi
| Regional Level Types | |
|---|---|
| Dee North Mine | Mine |
| Bootstrap Mining District | Mining District |
| Elko County | County |
| Nevada | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41° 1' 56'' North , 116° 25' 39'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Carlin | 2,302 (2017) | 44.6km |
Structure: Greybeck (1985) Proposes That Dee Is Located At The Leading Edge Of The Golconda Thrust And That Beds Exposed In The Dee Mine Pit Lie On The West Flank Of A Close To Tight N-Ne Trending Antiform. See Comments
Alteration: Silicification And Argillization Of Originally Calcareous Siltstones And Limestones Are The Dominant Alteration Effects. Where Mineralized, Intrusive Dikes Of Intermediate Composition Are Sericitized And Often Silicified.
Deposit: Dee consists of two orebodies, the main and ridge zones. Dimensions are for the main orebody.
Deposit type: Carbonate-hosted Au-Ag
Development: Expl.com: the original discovery was made in boulder creek in 1980 by delamare, working for cordex exploration co. Subsequent drilling of 247 holes totalling 120,000 ft. Located the main and ridge orebodies. A mine feasibility study was commissioned in 1982. The production decision was made in april, 1983. Production of mill grade ore began in 1984. A heap leaching operation to treat lower grade ore commenced june 1, 1985. ; total$: 21.0 ; econ.com: cash costs of Au production were <$200/oz. In 1987, $204/oz. In 1988, $247/oz. In 1989, and $264/oz. In 1990. Mining costs were $6 per ton milled in 1987. The dee mine has a projected mine life of nine years and has created 100 permanent NE W jobs with a payroll of $3.0 million per year. Total expenditure on payroll, supplies, services, taxes, and royalties exceeds $7.0 million per year.
Geology: Western facies, upper plate rocks host the ore.
Rock formation(s): Vitric Tuff;Intermediate Dikes
Bootstrap Limestone;Carlin Formation
Ore(s): Northerly- And Northwesterly-Trending Faults And Their Intersections Host Au Mineralization. These Faults Can Host Au Values Exceeding 0.25 Opt Au Over Narrow Widths, Suggesting They Are The Main Conduits For Au-Bearing Hydrothermal Fluids. Dikes Occupying The Faults Host Small Volumes Of High Grade Ore. Economic Au Mineralization Rarely Migrated More Than A Few Feet From The Faults.
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:
| ✪ Baryte Formula: BaSO4 Habit: golden Colour: chisel shaped, tabular |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Goethite Formula: Fe3+O(OH) |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Stibnite Formula: Sb2S3 |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Stibnite | 2.DB.05 | Sb2S3 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Goethite | Fe3+O(OH) |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Stibnite | Sb2S3 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Pyrite | FeS2 |
| Sb | Antimony | |
| Sb | ⓘ Stibnite | Sb2S3 |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10047016 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Antler Foreland BasinBasin
- Basin and Range BasinsBasin
- Copper–Bull Run–Elko–Indian Wells BasinBasin
- Mojave DomainDomain
- Northern Basin and RangeWide Rift
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Dee North Mine, Bootstrap Mining District, Elko County, Nevada, USA