Unnamed Occurrence (ARDF - HE077; south of upper Windy Creek), Bonnifield Mining District, Denali Borough, Alaska, USAi
Regional Level Types | |
---|---|
Unnamed Occurrence (ARDF - HE077; south of upper Windy Creek) | - not defined - |
Bonnifield Mining District | Mining District |
Denali Borough | Borough |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
63° 27' 36'' North , 149° 8' 24'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Cantwell | 219 (2011) | 12.1km |
McKinley Park | 185 (2014) | 32.3km |
Healy | 1,021 (2018) | 44.9km |
Mindat Locality ID:
200756
Long-form identifier:
mindat:1:2:200756:7
GUID (UUID V4):
674f5af2-66b7-4871-93c1-df8da88f1c43
The site is in Denali National Park Wilderness.
Location: This occurrence is at an elevation of about 4,200 feet south of upper Windy Creek, a tributary of the Nenana River. The site is at the junction of sections 5, 6, 7 and 8, T. 17 S., R. 8 W., of the Fairbanks Meridian. The location is accurate to within 3,000 feet. This is location 1 of Hickman and Craddock (1976).
Geology: The country rocks in the area of this occurrence are Devonian to Ordovician argillite and interbedded limestone that have been intruded by small plugs of Upper Cretaceous to Lower Tertiary quartz diorite. The deposit consists of a 3- to 9-foot-wide skarn containing discontinuous, 1- to 3-foot-thick zones of pyrrhotite and minor chalcopyrite along fractures. Weathering and oxidation have produced a heavy limonitic coating, malachite, and erythrite. Samples contain 1,900 ppm copper and 0.6 ppm silver (Hickman and Craddock, 1976).
Workings: Surface sampling only. Samples contain 1,900 ppm copper and 0.6 ppm silver (Hickman and Craddock, 1976).
Age: Late Cretaceous or younger.
Alteration: Skarn and subsequent weathering and oxidation.
Commodities (Major) - Cu; (Minor) - Ag
Development Status: None
Deposit Model: Cu skarn (Cox and Singer, 1986; model 18b)
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
6 valid minerals.
Detailed Mineral List:
β Calcite Formula: CaCO3 |
β Chalcopyrite Formula: CuFeS2 |
β Diopside Formula: CaMgSi2O6 |
β Malachite Formula: Cu2(CO3)(OH)2 |
β Pyrrhotite Formula: Fe1-xS |
β Wollastonite Formula: Ca3(Si3O9) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
β | Chalcopyrite | 2.CB.10a | CuFeS2 |
β | Pyrrhotite | 2.CC.10 | Fe1-xS |
Group 5 - Nitrates and Carbonates | |||
β | Calcite | 5.AB.05 | CaCO3 |
β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
Group 9 - Silicates | |||
β | Diopside | 9.DA.15 | CaMgSi2O6 |
β | Wollastonite | 9.DG.05 | Ca3(Si3O9) |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Malachite | Cu2(CO3)(OH)2 |
C | Carbon | |
C | β Calcite | CaCO3 |
C | β Malachite | Cu2(CO3)(OH)2 |
O | Oxygen | |
O | β Calcite | CaCO3 |
O | β Diopside | CaMgSi2O6 |
O | β Malachite | Cu2(CO3)(OH)2 |
O | β Wollastonite | Ca3(Si3O9) |
Mg | Magnesium | |
Mg | β Diopside | CaMgSi2O6 |
Si | Silicon | |
Si | β Diopside | CaMgSi2O6 |
Si | β Wollastonite | Ca3(Si3O9) |
S | Sulfur | |
S | β Chalcopyrite | CuFeS2 |
S | β Pyrrhotite | Fe1-xS |
Ca | Calcium | |
Ca | β Calcite | CaCO3 |
Ca | β Diopside | CaMgSi2O6 |
Ca | β Wollastonite | Ca3(Si3O9) |
Fe | Iron | |
Fe | β Chalcopyrite | CuFeS2 |
Fe | β Pyrrhotite | Fe1-xS |
Cu | Copper | |
Cu | β Chalcopyrite | CuFeS2 |
Cu | β Malachite | Cu2(CO3)(OH)2 |
Other Databases
Link to USGS - Alaska: | HE077 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Windy-McKinley DomainDomain
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