Jay Creek Mine, Valdez Creek Mining District, Matanuska-Susitna Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Jay Creek Mine | Mine |
| Valdez Creek Mining District | Mining District |
| Matanuska-Susitna Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
62° 46' 49'' North , 147° 52' 8'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
MAS/MIL number 20760048.
Location: This placer mine is located on lower Jay Creek; it extends for about 1 mile upstream from the mouth of the creek on the Susitna River. The mine is centered in NW1/4NW1/4 sec. 13, T. 31 N., R. 8 E., Seward Meridian. The location is accurate to within 1/2 mile.
Geology: The Jay Creek placer deposit extends for a mile above the mouth of the creek, in alluvium estimated to be 12 feet thick (Kurtak and others, 1992). The lower part of the creek is underlain by Triassic metabasalt (Schmidt, 2002). The upper portion of the drainage is underlain by Cretaceous-Tertiary granodiorite and tonalite (Csejtey and others, 1978). The Jay Creek mine workings consist of placer tailings and test pits that extend from the mouth upstream for 1 mile. Stream-sediment samples collected with a backhoe by the U.S. Bureau of Mines from the mouth to the head of the creek contain up to 0.001 ounce of gold per cubic yard ; surface samples contain up to 3,300 parts per billion gold and 2 parts per million silver. Suction dredge concentrates contain 1,025 parts per million vanadium and 5.16 percent titanium; samples of alluvium contain up to 80 parts per million tungsten (Balen, 1990; Kurtak and others, 1992). Minor production was reported during 1920-49 and 1987-88 (Balen, 1990). A total of 14 state mining claims were valid as of January 1, 2000 (Northern Associates Inc., written communication, 2001).
Workings: The Jay Creek mine workings consist of placer tailings and test pits that extend from the mouth upstream for 1 mile. Extensive sampling by U.S. Bureau of Mines (Balen, 1990; Kurtak and others, 1992). The mine includes the Rainbow 1-7 claims staked by Black Creek Mining Company(?). A total of 14 state mining claims were valid as of January 1, 2000 (Northern Associates Inc., written communication, 2001).
Age: Quaternary placer.
Production: Minor production was reported during 1920-49 and 1987-88 (Balen, 1990).
Commodities (Major) - Au; (Minor) - Ti, V, W
Development Status: Yes; small
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: | TK034 |
|---|
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