Unnamed Occurrence (ARDF - TK029; east of Big Lake), Valdez Creek Mining District, Matanuska-Susitna Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - TK029; east of Big Lake) | - not defined - |
| Valdez Creek Mining District | Mining District |
| Matanuska-Susitna Borough | Borough |
| Alaska | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
62° 59' 22'' North , 148° 2' 16'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
201776
Long-form identifier:
mindat:1:2:201776:4
GUID (UUID V4):
05b0a002-a490-4de3-8168-92b00f69cd36
MAS/MIL number 20760112.
Location: This occurrence is at an elevation of about 3,300 feet, 5 miles east of Big Lake. The occurrence is in the SW1/4 sec. 24, T. 22 S., R. 3 W., Fairbanks Meridian. The location is accurate to within 1/4 mile. This occurrence has also been called the Watana Creek lode. This is locality 13 of Csejtey and Miller (1978).
Geology: This occurrence consists of pyrite in a silicified zone in a Tertiary granitic pluton that intrudes metabasalt and Lower Cretaceous argillite and lithic graywacke (Csejtey and others, 1978). The metabasalt next to the pluton is also silicified. A sample of felsic intrusive rock collected by the U.S. Geological Survey contains 2.5 parts per million gold and 0.5 parts per million silver (Miller and others, 1978). Samples of silicified granite and silicified wall rock collected by the U.S. Bureau of Mines contain up to 0.5 parts per million silver and 0.12 percent zinc; a placer sample contains 1,500 parts per billion gold (Kurtak and others, 1992).
Workings: Limited sampling by the U.S. Geological Survey and U.S. Bureau of Mines (Miller and others, 1978; Kurtak and others, 1992).
Alteration: Granite and metabasalt are silicified.
Commodities (Major) - Ag, Au, Zn
Development Status: None
Deposit Model: Porphyry Cu or Polymetallic vein? (Cox and Singer, 1986; model 20c or 22c?)
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 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
Other Databases
| Link to USGS - Alaska: | TK029 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Wrangellia DomainDomain
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
