Cobalt Mine (Cobalt shaft; Cobalt prospect; Walker prospect [?]), Grapevine Gulch, Black Hills Mining District, Black Hills (Black Hill Range), Yavapai County, Arizona, USAi
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Latitude & Longitude (WGS84):
34° 36' 59'' North , 112° 10' 40'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Dewey-Humboldt | 3,894 (2011) | 11.3km |
| Prescott Valley | 42,197 (2017) | 12.6km |
| Jerome | 456 (2017) | 15.9km |
| Verde Village | 11,605 (2011) | 18.5km |
| Clarkdale | 4,240 (2017) | 20.4km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Prescott Gem & Mineral Club | Prescott Valley, Arizona | 13km |
| Mingus Gem & Mineral Club | Cottonwood, Arizona | 21km |
| Verde River Rockhounds | Cottonwood, Arizona | 21km |
| Sedona Gem & Mineral Club | Sedona, Arizona | 47km |
A Co-Cu-As-Fe-Silica occurrence/prospect located about ½ mile SE from the Shylock Mine in a tributary of Grapevine Gulch.
Mineralization is a vein deposit with pinch and swell orebody(ies) that occur in greenstone with aplite dikes. The country rock is a small patch of gabbro separating the granodiorite to the south from Grapevine Gulch formation to the north.
A small vein exposed by the winze strikes N.30ºE. and dipping 60º-70ºW. The vein ranges in width from a knife-edge to 14 inches, and is about 15 feet long. It pinches out before reaching the face of the adit, and is not exposed on the SW side of the winze. The vein material is partly oxidized, altered gabbro containing relics of sulfide, possibly cobaltiferous arsenopyrite. The vein in the adit is covered with erythrite.
Workings include a 28 foot long opencut leading to an 18 foot long adit. A 20 foot winze was sunk at the portal.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Arsenopyrite Formula: FeAsS References: |
| ⓘ Arsenopyrite var. Danaite Formula: (Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS References: |
| ⓘ Erythrite Formula: Co3(AsO4)2 · 8H2O Description: Post-mining product on walls of adit. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| ⓘ | var. Danaite | 2.EB.20 | (Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Erythrite | 8.CE.40 | Co3(AsO4)2 · 8H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Erythrite | Co3(AsO4)2 · 8H2O |
| O | Oxygen | |
| O | ⓘ Erythrite | Co3(AsO4)2 · 8H2O |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Arsenopyrite var. Danaite | (Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Arsenopyrite var. Danaite | (Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS |
| Co | Cobalt | |
| Co | ⓘ Erythrite | Co3(AsO4)2 · 8H2O |
| Co | ⓘ Arsenopyrite var. Danaite | (Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| As | ⓘ Erythrite | Co3(AsO4)2 · 8H2O |
| As | ⓘ Arsenopyrite var. Danaite | (Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Great Plains DomainDomain
- Southern Basin and RangeWide Rift
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