Unnamed Occurrence (ARDF - FB130; near Spruce Creek), Bonnifield Mining District, Denali Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - FB130; near Spruce Creek) | - not defined - |
| Bonnifield Mining District | Mining District |
| Denali Borough | Borough |
| Alaska | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
64° 4' 58'' North , 148° 55' 30'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Healy | 1,021 (2018) | 25.2km |
| Anderson | 265 (2017) | 31.7km |
| McKinley Park | 185 (2014) | 38.9km |
| Nenana | 376 (2017) | 54.0km |
Mindat Locality ID:
200725
Long-form identifier:
mindat:1:2:200725:3
GUID (UUID V4):
83a14311-be12-46c6-a42c-4265d6a989f9
Location: This unnamed prospect is located in sec. 4, T. 10 S., R. 7 W., Fairbanks Meridian. Although this occurrence is called Spruce Creek, Cobb plotted it at the head of Rex Creek, just west of Spruce Creek. The coordinates reflect Cobb's location; it is unclear if this location is accurate, and this occurrence may be a mile or more away. The occurrence is locality 38 of Cobb (1972 [MF 410]).
Geology: Bedrock in the area is gray quartz-orthoclase-sericite schist and augen gneiss of the California Creek Member of the Totalanika Schist (Wahrhaftig, 1970 [GQ-810]). Berg and Cobb (1967, p. 202-203) reported a few gold-bearing lodes and small jamesonite-bearing veins. Samples from an antimony-bearing vein contained 0.44 ounce of gold per ton and 5.4 ounces of silver per ton (Joesting, 1943 [ATDM Pamph. 2, p. 14]).
Workings: The only work that has been reported is hand samples taken of a vein for assay (Joesting, 1943 [ATDM 2, p. 14]).
Commodities (Major) - Au; (Minor) - Ag, Pb, Sb
Development Status: None
Deposit Model: Gold- and antimony-bearing veins in quartz-orthoclase-sericite schist.
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
4 valid minerals.
Detailed Mineral List:
| β Arsenopyrite Formula: FeAsS |
| β Gold Formula: Au |
| β Jamesonite Formula: Pb4FeSb6S14 |
| β Scorodite Formula: Fe3+AsO4 · 2H2O |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| β | Arsenopyrite | 2.EB.20 | FeAsS |
| β | Jamesonite | 2.HB.15 | Pb4FeSb6S14 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| β | Scorodite | 8.CD.10 | Fe3+AsO4 Β· 2H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Scorodite | Fe3+AsO4 · 2H2O |
| O | Oxygen | |
| O | β Scorodite | Fe3+AsO4 · 2H2O |
| S | Sulfur | |
| S | β Arsenopyrite | FeAsS |
| S | β Jamesonite | Pb4FeSb6S14 |
| Fe | Iron | |
| Fe | β Arsenopyrite | FeAsS |
| Fe | β Jamesonite | Pb4FeSb6S14 |
| Fe | β Scorodite | Fe3+AsO4 · 2H2O |
| As | Arsenic | |
| As | β Arsenopyrite | FeAsS |
| As | β Scorodite | Fe3+AsO4 · 2H2O |
| Sb | Antimony | |
| Sb | β Jamesonite | Pb4FeSb6S14 |
| Au | Gold | |
| Au | β Gold | Au |
| Pb | Lead | |
| Pb | β Jamesonite | Pb4FeSb6S14 |
Other Databases
| Link to USGS - Alaska: | FB130 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
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
