Unnamed Occurrence (ARDF - MM136; lower Eldorado Creek), Kantishna Mining District, Denali Borough, Alaska, USAi
Regional Level Types | |
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Unnamed Occurrence (ARDF - MM136; lower Eldorado Creek) | - not defined - |
Kantishna Mining District | Mining District |
Denali Borough | Borough |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
63° 31' 22'' North , 150° 58' 29'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
201360
Long-form identifier:
mindat:1:2:201360:5
GUID (UUID V4):
a8fb03aa-7ae5-49f0-869d-8a7bfa996938
The occurrence is in Denali National Park and Preserve. It is probably within the boundary of a former placer claim on Eldorado Creek.
Location: This occurrence is on a trail along lower Eldorado Creek. It is in the SE1/4 SE1/4 section 14, T. 16 S., R. 18 W., Fairbanks Meridian. The location is accurate within 500 feet. The occurrence corresponds to number 69 of Hawley and Associates (1978), 12 of Bundtzen, Smith, and Tosdal (1976), and 15 of Bundtzen (1981). The site is probably the same as an occurrence described by Morrison (1964,sample A16).
Geology: The country rock at this occurrence is quartzite, probably of the lower Paleozoic Spruce Creek sequence (Bundtzen, 1981). The occurrence consists of a poorly exposed quartz-siderite vein that strikes strikes about N 25-35 E., and dips 80 SE. The vein contains pyrite, arsenopyrite, and probably galena. Samples assay 0.01 ounce of gold per ton, 0.16 ounce of silver per ton, as much as 0.24 percent lead, and 0.45-0.95 percent arsenic ( Thornsberry, McKee, and Salisbury, 1978, v. 2, site 24; Bundtzen, 1981, table 10, number 15). Morrison (1964) reported pyrite and arsenopyrite in quartz-calcite veins at this or a nearby locality. A sample assayed 0.04 ounce of gold per ton.
Workings: The occurrence is a natural exposure in a road cut. There are no workings.
Age: The deposit is assumed to be Eocene (see record MM091).
Commodities (Major) - Au(?); (Minor) - Ag, As, Pb
Development Status: None
Deposit Model: Low-sulfide Au(?)-quartz vein (Cox and Singer, 1986; model 36a).
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:
ⓘ Arsenopyrite Formula: FeAsS |
ⓘ Calcite Formula: CaCO3 |
ⓘ Galena Formula: PbS |
ⓘ Pyrite Formula: FeS2 |
ⓘ Quartz Formula: SiO2 |
ⓘ Siderite Formula: FeCO3 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Galena | 2.CD.10 | PbS |
ⓘ | Pyrite | 2.EB.05a | FeS2 |
ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Quartz | 4.DA.05 | SiO2 |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Calcite | 5.AB.05 | CaCO3 |
ⓘ | Siderite | 5.AB.05 | FeCO3 |
List of minerals for each chemical element
C | Carbon | |
---|---|---|
C | ⓘ Calcite | CaCO3 |
C | ⓘ Siderite | FeCO3 |
O | Oxygen | |
O | ⓘ Calcite | CaCO3 |
O | ⓘ Quartz | SiO2 |
O | ⓘ Siderite | FeCO3 |
Si | Silicon | |
Si | ⓘ Quartz | SiO2 |
S | Sulfur | |
S | ⓘ Arsenopyrite | FeAsS |
S | ⓘ Galena | PbS |
S | ⓘ Pyrite | FeS2 |
Ca | Calcium | |
Ca | ⓘ Calcite | CaCO3 |
Fe | Iron | |
Fe | ⓘ Arsenopyrite | FeAsS |
Fe | ⓘ Pyrite | FeS2 |
Fe | ⓘ Siderite | FeCO3 |
As | Arsenic | |
As | ⓘ Arsenopyrite | FeAsS |
Pb | Lead | |
Pb | ⓘ Galena | PbS |
Other Databases
Link to USGS - Alaska: | MM136 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
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