Stepovich Prospect, Fairbanks Mining District, Fairbanks North Star Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Stepovich Prospect | Prospect |
| Fairbanks Mining District | Mining District |
| Fairbanks North Star Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 58' 44'' North , 147° 19' 37'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Fox | 417 (2011) | 13.9km |
| Two Rivers | 719 (2011) | 18.0km |
| Farmers Loop | 4,853 (2017) | 19.2km |
| Badger | 19,482 (2011) | 22.1km |
| Fairbanks | 32,325 (2017) | 24.1km |
Location: The accuracy of this location is uncertain and is based on a location reported by Cobb (1976 [OFR 76-662, p. 145]), which was in turn based on a sketch map by Chapin (1914 [B 592-J, p. 330]). The coordinates locate the Stepovich prospect on the ridge west of Pearl Creek, south of Yellow Pup mine (FB118) about one mile east-southeast of Gilmore Dome in the NW1/4 sec. 27, T. 2 N., R. 2 E., Fairbanks Meridian. (Note that there another Stepovich deposit nearby, a tungsten mine (FB113).)
Geology: A 38-foot shaft was sunk on a quartz vein that strikes N. 70 E. and dips 70 NW. Quartz on the dump contains bunches of arsenopyrite and a little pyrite; fractures are cemented by scorodite (Chapin, 1914 [B 592-J, p. 330]). The bedrock is quartz-muscovite schist, quartzite, and chlorite-quartz schist of the Fairbanks Schist (Newberry and others, 1996). On the ridge, just above this prospect the bedrock is amphibolite, magnetite-rich biotite schist, quartz schist, and marble. The prospect is bordered on the south and east by Cretaceous granite and granodiorite.
Workings: A 38-foot shaft was sunk on a quartz vein (Chapin, 1914 [B 592-J, p. 330]).
Alteration: Fractures are cemented by scorodite (Chapin, 1914 [B 592-J, p. 330]).
Commodities (Major) - Au
Development Status: None
Deposit Model: Schist-hosted gold-quartz vein
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
2 valid minerals.
Detailed Mineral List:
| ⓘ Native Gold Formula: Au |
| ⓘ Scorodite Formula: Fe3+AsO4 · 2H2O References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Scorodite | 8.CD.10 | Fe3+AsO4 · 2H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| O | Oxygen | |
| O | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| Fe | Iron | |
| Fe | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| As | Arsenic | |
| As | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | FB119 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- North America PlatformPassive Margin
- Yukon-Tanana lower DomainDomain
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