Unnamed Prospect (ARDF - MM025; ridge northeast of Brooker Mountain), Kantishna Mining District, Denali Borough, Alaska, USAi
Regional Level Types | |
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Unnamed Prospect (ARDF - MM025; ridge northeast of Brooker Mountain) | - not defined - |
Kantishna Mining District | Mining District |
Denali Borough | Borough |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
63° 30' 41'' North , 151° 2' 24'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Mindat Locality ID:
202285
Long-form identifier:
mindat:1:2:202285:0
GUID (UUID V4):
1561314b-ff02-4bb3-8e73-3b5fcb03f0b1
The prospect is in Denali National Park and Preserve.
Location: This prospect is at an elevation of about 3100 feet on the southeast- trending ridge about midway between Brooker Mountain and Alpha Ridge. It is in the SE1/4 section 21, T. 16 S., R. 18 W., Fairbanks Meridian. The location is accurate within 500 feet. The prospect corresponds to number 4 of Thornsberry, McKee, and Salisbury (1984).
Geology: The country rock at this prospect is feldspar-quartz-mica schist of the Birch Creek Schist (Bundtzen, 1981). Although the mineral deposit is not exposed, the distribution of float in relation to old pits and topography indicates that the deposit is a vein which strikes about EW and dips at a moderate or shallow angle to the south (Thornsberry, McKee, and Salisbury, 1984, v. 2, occurrence 4). A selected sample of sulfide-rich material in a pit assayed 144 ounces of silver per ton, 18 percent arsenic, and 45 percent antimony. It also contained 0.365 percent copper, 8.4 percent lead, and 3.75 percent zinc (Thornsberry, McKee, and Salisbury, 1984, v. 2). Some of the material contains about 50 percent stibnite. The high arsenic value indicates that arsenopyrite or its oxidation product scorodite is present.
Workings: The vein has been explored by several shallow pits of unknown date.
Age: The deposit is assumed to be Eocene (see record MM091).
Commodities (Major) - Ag, Sb; (Minor) - As, Au, Cu, Pb, Zn
Development Status: Undetermined.
Deposit Model: Polymetallic vein (Cox and Singer, 1986; model 22c).
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
7 valid minerals.
Detailed Mineral List:
β Arsenopyrite ? Formula: FeAsS |
β Galena Formula: PbS |
β Pyrite Formula: FeS2 |
β Quartz Formula: SiO2 |
β Scorodite Formula: Fe3+AsO4 · 2H2O |
β Sphalerite Formula: ZnS |
β Stibnite Formula: Sb2S3 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
β | Sphalerite | 2.CB.05a | ZnS |
β | Galena | 2.CD.10 | PbS |
β | Stibnite | 2.DB.05 | Sb2S3 |
β | Pyrite | 2.EB.05a | FeS2 |
β | Arsenopyrite ? | 2.EB.20 | FeAsS |
Group 4 - Oxides and Hydroxides | |||
β | Quartz | 4.DA.05 | SiO2 |
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 Quartz | SiO2 |
O | β Scorodite | Fe3+AsO4 · 2H2O |
Si | Silicon | |
Si | β Quartz | SiO2 |
S | Sulfur | |
S | β Arsenopyrite | FeAsS |
S | β Galena | PbS |
S | β Pyrite | FeS2 |
S | β Sphalerite | ZnS |
S | β Stibnite | Sb2S3 |
Fe | Iron | |
Fe | β Arsenopyrite | FeAsS |
Fe | β Pyrite | FeS2 |
Fe | β Scorodite | Fe3+AsO4 · 2H2O |
Zn | Zinc | |
Zn | β Sphalerite | ZnS |
As | Arsenic | |
As | β Arsenopyrite | FeAsS |
As | β Scorodite | Fe3+AsO4 · 2H2O |
Sb | Antimony | |
Sb | β Stibnite | Sb2S3 |
Pb | Lead | |
Pb | β Galena | PbS |
Other Databases
Link to USGS - Alaska: | MM025 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
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