Dutch Flat mine, Dutch Flat Mining District, Humboldt County, Nevada, USAi
| Regional Level Types | |
|---|---|
| Dutch Flat mine | Mine |
| Dutch Flat Mining District | Mining District |
| Humboldt County | County |
| Nevada | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41° 10' 38'' North , 117° 29' 25'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Golconda | 214 (2011) | 24.9km |
| Winnemucca | 7,887 (2017) | 30.6km |
| Paradise Valley | 109 (2011) | 35.3km |
| Orovada | 155 (2011) | 50.1km |
Mindat Locality ID:
59609
Long-form identifier:
mindat:1:2:59609:6
GUID (UUID V4):
b2853208-d3be-4307-b359-6b1276977ecd
Sec 17 T38N R40E
Alteration: Yes, Altered Sediments; Argillic
Deposit: Early history of the mine is unknown, except that it was discovered and developed after the dutch flat placer was discovered in 1893. Dutch flat mining co. Was organized by e.r. Rogers, e. Hazlett, and j.w. Tuft in 1940, when ore was developed and mined from underground workings. Developed also by shallow open-bulldozer cuts. Underground workings total about 700 ft. The mine was being reopened in june, 1969 ; info.src : 1 pub lit; 3 field observ main mineralization at north end of shear zone; minor workings at south end. The mineralization appears to be structurally controlled by interesting fault or fracture zones. The larger eastern mineralized zone is 3600 ft long and up to 800 ft wide. The western zone is 2200 ft long and up to 400 ft wide. Discovery year: not long after 1898
Deposit type: Hot-spring Hg
Development: The mine was being reopened in 1969. The current (1985) property includes claims upstream from dutch flat. In 1984, mineralization was discovered by preliminary mapping and rock sampling by brican. In 1985, bow valley entered into a joint venture with brican and agreed to provide finding for a 30-hole drill program. Detailed geochemical, geological, and geophysical surveys completed by brican delineated two zones in the central claim block in which outcrops contain consistent gold and silver values. A 30-hole drilling program was scheduled to begin in sept 1985.
Geology: Geol.com: cinnabar is chiefly distributed in fractured, sheared, altered hornfels, on shear surfaces, and As disseminations and discontinuous veinlets. Ore shoots are small and discontinuous.
Rock formation(s): Harmony Formation
Ore(s): Shear Zone, Averaging 5 Ft. Wide, 900 Ft Long.
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
5 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:
| ⓘ Cinnabar Formula: HgS |
| ⓘ Jarosite Formula: KFe3+3(SO4)2(OH)6 |
| ⓘ Prehnite Formula: Ca2Al2Si3O10(OH)2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Cinnabar | 2.CD.15a | HgS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Jarosite | 7.BC.10 | KFe3+3(SO4)2(OH)6 |
| Group 9 - Silicates | |||
| ⓘ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | Oxygen | |
| O | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | ⓘ Quartz | SiO2 |
| Al | Aluminium | |
| Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | Silicon | |
| Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Cinnabar | HgS |
| S | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| S | ⓘ Pyrite | FeS2 |
| K | Potassium | |
| K | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Ca | Calcium | |
| Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Fe | ⓘ Pyrite | FeS2 |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
Other Databases
| Link to USGS MRDS: | 10040540 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Golconda-Roberts Mountain DomainDomain
- Havallah BasinBasin
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References
