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Hidden Creek Prospect, Chistochina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Hidden Creek Prospect | Prospect |
| Chistochina Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
62° 45' 36'' North , 144° 9' 36'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Slana | 147 (2011) | 11.7km |
| Mentasta Lake | 112 (2011) | 26.7km |
Location: Hidden Creek (Cobb, 1979 [OF 79-1247, p. 13]), is a south-flowing tributary to Flat Creek. It has been actively prospected about one-quarter mile north of the lake in the Flat Creek valley (Richter, 1966, fig. 5). Hidden Creek is locality 20 of Richter and Matson (1972) and locality 19 of MacKevett and Holloway (1977). It lies along the section line at the bottom center of the SW1/4, section 6, T. 11 N., R. 7 E., Copper River Meridian.
Geology: The rocks in the area consist of Pennsylvanian to Permian volcanics of the Tetelna Formation that are intruded by monzonitic rocks of the Pennsylvanian to Permian, Ahtell pluton. The contact is broad and low angle; the Teteltna rocks form a roof cap over the pluton along Hidden Creek (Richter, 1966). Little is known about this placer deposit. The area was prospected in the early 1900's; it was restaked and prospected again after the discovery of the placer in Grubstake Gulch in 1934 (Moffit, 1938, p. 51). The placer prospect is about 3 miles below the Elizabeth, molybdenum-porphyry deposit (GU025). This porphyry was apparently not sampled systematically for gold, but Richter and Matson (1968) reported one highly anomalous stream-sediment sample with 300 ppb Au in the valley of Hidden Creek below the Elizabeth deposit and about 2.5 miles above the placer workings in Hidden Creek.
Workings: Small placer operation (Moffit, 1938; Richter, 1966).
Age: Holocene placer.
Production: Probably minor .
Commodities (Major) - Au
Development Status: Yes
Deposit Model: Placer Au (Cox and Singer, 1986; model 39a)
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
1 valid mineral.
Detailed Mineral List:
| ⓘ Native Gold Formula: Au |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
List of minerals for each chemical element
| Au | Gold | |
|---|---|---|
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | GU023 |
|---|
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