Unnamed Prospect (ARDF - TL049; on the Kichatna River), Yentna Mining District, Matanuska-Susitna Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Prospect (ARDF - TL049; on the Kichatna River) | - not defined - |
| Yentna 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° 9' 10'' North , 151° 44' 56'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: Clark and Cobb (1972, locality 11) locate this placer prospect at the confluence of the Nakochna River and the Kichatna River in the southeast quarter of Section 24, T. 24 N., R. 14 W., of the Seward Meridian. Reed and others (1978) show this prospect as locality 39.
Geology: Reed and others (1978) describe this site as an old placer prospect on river bars, chiefly for platinum. There is no evidence that the 1917 dredging operation at this site was productive. Cobb and Reed (1980) report some fine gold was recovered from the Nakochna River. No other published data are available. The sources of platinum may be the ultramafic rocks of the composite plutons (Tcp) described by Reed and Nelson (1980) that extend from Mt. Estelle in the Tyonek quadrangle to the headwaters of Cascade Creek. Anomalous gold, platinum-group elements, copper, chrome, nickel and arsenic are reported from the composite plutons (Reed and others, 1978; Reed and Nelson, 1980; Nelson and others, 1992). Gold and platinum group element placers have been worked at sites downstream from these bodies (Mertie, 1919; Cobb, 1973). Also see TL020, TL023, TL052, and TL05.
Workings: According to Reed and others (1978) this was a former dredge site.
Age: Pleistocene.
Commodities (Major) - Au, Pt
Development Status: Undetermined
Deposit Model: Placer Au-PGE (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
2 valid minerals.
Detailed Mineral List:
| ⓘ Native Gold Formula: Au |
| ⓘ Native Platinum Formula: Pt |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Native Platinum | 1.AF.10 | Pt |
List of minerals for each chemical element
| Pt | Platinum | |
|---|---|---|
| Pt | ⓘ Native Platinum | Pt |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | TL049 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Farewell buried DomainDomain
- Farewell TerranePassive Margin
- Susitna BasinBasin
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.
