Golconda Mine, Golconda Mining District, Humboldt County, Nevada, USAi
| Regional Level Types | |
|---|---|
| Golconda Mine | Mine |
| Golconda Mining District | Mining District |
| Humboldt County | County |
| Nevada | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
40° 56' 35'' North , 117° 25' 43'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Golconda | 214 (2011) | 5.2km |
| Winnemucca | 7,887 (2017) | 26.0km |
| Battle Mountain | 3,635 (2011) | 53.4km |
Sec 1 T35N R40E. Tungsten bearing clays and tufa (grade up to 7%). Hot Spring deposit.
Alteration: Silicification, Argillization And Pyritization Of Underlying Rocks
Deposit: Veins consist of linear masses of anastomosing groups of veinlets along NE trend beneath tufa caps. Both ferruginous and manganiferous vein fillings contain tungsten with quartz, barite and jarosite. Kerr reports that the ferruginous zones in part replace the manganiferous phases and there is a higher concentration of tungsten in the ferruginous zones. In general, the manganiferous and ferruginous materials are separated into different layers, although both occur As streaks in the layers of the other material. Both are underlain by a massive illite layer with some fine quartz rich zones. Tungsten occurs in all of these layers. W.c. Gregg made the first locations in the area and organized the district in 1866. Manganese associated with tungsten was discovered 4 miles east of golconda in 1885. It was an important source of tungsten from 1941 to 1945. Excavation of the high-grade ore containing up to 7% wo3, halted early in 1945. The W-bearing layers of ferruginous and manganiferous clayey gravel & tufa were worked by open pits and flat, shallow stopes. The deposits are of hot-springs origin and are aligned above a nne-trending vein system in steeply-dipping cambrian rocks. ; info.src : 1 pub lit; 2 unpub rept; 3 field observ
Deposit type: Epithermal Mn
Development: Important source of tungsten during w.w.ii.
Geology: Lenticular deposit invedded in a soft buff calcareous tufa containing fragments of sandstone, shale, and limestone: the black, ore bed is up to 3 1/2 ft. Thick. Local Mn-rich spring water provided the Mn for the deposit which formed by precipitation of the minerals from super-saturated brines of pleistocene lake lahontan. Beweath the blanket deposit are veins of similar mineralization which may have provided the source of the overlying ores.
Ore(s): Sedimentary Beds; Underlying Vein System; Adjacent N25e Fault
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities8 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Rock list contains entries from the region specified including sub-localities
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Baryte Formula: BaSO4 |
| ⓘ Fluorapatite ? Formula: Ca5(PO4)3F References: Zach Berghorst CollectionIdentification: Visual Identification |
| ⓘ Goethite Formula: Fe3+O(OH) |
| ⓘ Hollandite Formula: Ba(Mn4+6Mn3+2)O16 |
| ⓘ Jarosite Formula: KFe3+3(SO4)2(OH)6 |
| ⓘ Lepidocrocite Formula: Fe3+O(OH) |
| ⓘ 'Limonite' |
| ⓘ Pararealgar Formula: As4S4 |
| ⓘ 'Psilomelane' |
| ⓘ Pyrolusite Formula: Mn4+O2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pararealgar | 2.FA.15b | As4S4 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Pyrolusite | 4.DB.05 | Mn4+O2 |
| ⓘ | Hollandite | 4.DK.05a | Ba(Mn4+6Mn3+2)O16 |
| ⓘ | Lepidocrocite | 4.FE.15 | Fe3+O(OH) |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| ⓘ | Jarosite | 7.BC.10 | KFe3+3(SO4)2(OH)6 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Fluorapatite ? | 8.BN.05 | Ca5(PO4)3F |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Psilomelane' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| H | ⓘ Lepidocrocite | Fe3+O(OH) |
| O | Oxygen | |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Fluorapatite | Ca5(PO4)3F |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
| O | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| O | ⓘ Lepidocrocite | Fe3+O(OH) |
| O | ⓘ Pyrolusite | Mn4+O2 |
| F | Fluorine | |
| F | ⓘ Fluorapatite | Ca5(PO4)3F |
| P | Phosphorus | |
| P | ⓘ Fluorapatite | Ca5(PO4)3F |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| S | ⓘ Pararealgar | As4S4 |
| K | Potassium | |
| K | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Ca | Calcium | |
| Ca | ⓘ Fluorapatite | Ca5(PO4)3F |
| Mn | Manganese | |
| Mn | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
| Mn | ⓘ Pyrolusite | Mn4+O2 |
| Fe | Iron | |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Fe | ⓘ Lepidocrocite | Fe3+O(OH) |
| As | Arsenic | |
| As | ⓘ Pararealgar | As4S4 |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Ba | ⓘ Hollandite | Ba(Mn64+Mn23+)O16 |
Other Databases
| Link to USGS MRDS: | 10043948 |
|---|
Localities in this Region
- Nevada
- Humboldt County
- Golconda Mining District
- Golconda Mine
- Golconda Mining District
- Humboldt County
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Northern Basin and RangeWide Rift
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
Quick NavTopCommoditiesMineral ListRock TypesOther DatabasesLocalities in RegionOther RegionsReferences
Golconda Mine, Golconda Mining District, Humboldt County, Nevada, USA