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Rainy Creek Ridge No. 2 Occurrence, Kantishna Mining District, Denali Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Rainy Creek Ridge No. 2 Occurrence | Occurrence |
| Kantishna Mining District | Mining District |
| Denali Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 34' 16'' North , 150° 42' 54'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
The occurrence is in Denali National Park and Preserve.
Location: The Rainy Creek Ridge No. 2 prospect is at an elevation of about 3750 feet on the ridge between the East Fork of Glen Creek and Spruce Creek It is in the NE1/4 SE1/4 of section 31, T. !5 S., R. 16 W., Fairbanks Meridian. The location corresponds to number 83 of Thornsberry, McKee, and Salisbury (1984), which includes the Rainy Creek Ridge Nos. 1 and 2 claims, to number 55 of Bundtzen, Smith, and Tosdal (1976), and to number 250 of Hawley and Associates (1978). The location is accurate within 500 feet. It is not certain whether it actually marks the Rainy Ridge Creek No. 2 claim, but it appears likely to.
Geology: The country rocks at this occurrence are steeply-dipping metafelsite and chloritic phyllite of the Spruce Creek sequence; the rocks strike ENE (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, fig. K-2). The occurrence is a 15-foot-wide, nearly vertical, silicified shear zone that strikes N60-75E; it contains massive arsenopyrite along with less-abundant pyrite. Quartz is the main gangue mineral, accompanied by some kaolinite. Samples of the mineralized shear zone assayed as much as 0.01 ounce of gold per ton, 0.23 ounce of silver per ton, 11.0 percent arsenic, 0.31 percent lead, 0.25 percent antimony, 0.011 percent copper, and 0.04 percent zinc (Bundtzen, 1981, location 59b) . Some of the arsenopyrite is oxidized to scorodite.
Workings: The claim is unpatented and there are no workings.
Age: The deposit is assumed to be Eocene (see record MM091).
Alteration: Silicification, argillization. Oxidation of arsenic mineral.
Commodities (Major) - Ag, Au; (Minor) - As
Development Status: None
Deposit Model: Arsenopyrite-quartz lode containing minor gold, silver, and base metals.
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 |
| ⓘ Kaolinite Formula: Al2(Si2O5)(OH)4 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Scorodite Formula: Fe3+AsO4 · 2H2O |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| 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 |
| Group 9 - Silicates | |||
| ⓘ | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| H | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| O | Oxygen | |
| O | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| Al | Aluminium | |
| Al | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | Silicon | |
| Si | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| 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 |
Other Databases
| Link to USGS - Alaska: | MM067 |
|---|
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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