Siwash Creek Occurrence, Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Siwash Creek Occurrence | Occurrence |
| Koyukuk Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
67° 7' 11'' North , 149° 24' 0'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
See also: West Fork occurrence (CH001).
Location: The occurrence is at an elevation of about 2,100 ft in hills above the first significant fork in Siwash Creek upstream from its mouth and approximately 4 1/2 miles south-southwest of Boatman Pass. It is 17 1/4 miles east-southeast of the Myrtle Creek landing strip (SW1/4 sec. 31, T. 27 N., R. 8 W., of the Fairbanks Meridian). The location is accurate within a 1-mile radius.
Geology: This occurrence is described very generally as Cu sulfides and/or malachite-azurite stains and is located in an area mapped as a small body of chert within a Devonian(?) volcanic rock and chert unit (DeYoung, 1978). No other descriptive information is available.
Commodities (Major) - Cu
Development Status: None
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
2 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 5 - Nitrates and Carbonates | |||
|---|---|---|---|
| ⓘ | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Cu | Copper | |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS - Alaska: | CH002 |
|---|
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