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Sulphide Occurrence, Kantishna Mining District, Denali Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Sulphide Occurrence | Occurrence |
| Kantishna Mining District | Mining District |
| Denali Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 32' 14'' North , 150° 55' 51'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
The prospect is in Denali National Park and Preserve; it has been inactive for many decades.
Location: The Sulphide occurrence (Cobb, 1980 [OFR 80-363]) is in the canyon of Eureka Creek at an elevation of about 2100 feet. It is on a patented claim, in the SW1/4 SW1/4 section 7, T. 16 S., R. 17 W., Fairbanks Meridian. The location is accurate within 500 feet. The occurrence is number 22 of Hawley and Associates (1978), 33 of Bundtzen (1981), and 38 of Thornsberry, McKee, and Salisbury (1984).
Geology: A quartz vein at the Sulphide claim cuts Birch Creek schist. Davis (1923) described an 8-foot-thick quartz vein in the discovery cut near the center of the claim that contains pyrite; panned samples of the vein contained gold. Bundtzen (1981) reported that the vein, which he traced for about 150 feet, contains arsenopyrite, boulangerite, and pyrite. The arsenopyrite is partly oxidized to scorodite. Hawley and Associates (1978, nos. 137-38, table 4.1-A(1)) collected rock samples near the prospect that assayed as much as 20 ppm silver and 1.9 ppm gold.
Workings: Sloughed pits date at least as far back as 1922.
Age: The deposit is assumed to be Eocene (see record MM091).
Alteration: Partial oxidation of arsenopyrite to scorodite.
Commodities (Major) - Au; (Minor) - Ag, Pb
Development Status: No
Deposit Model: Low-sulfide gold-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
5 valid minerals.
Detailed Mineral List:
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Scorodite Formula: Fe3+AsO4 · 2H2O |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| 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 | ⓘ Quartz | SiO2 |
| O | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| As | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS - Alaska: | MM125 |
|---|
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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