Log In
Lost Pipe; Alatna River Prospect, Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Lost Pipe; Alatna River Prospect | Prospect |
| Koyukuk Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
66° 55' 50'' North , 153° 29' 41'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: This placer prospect (mine?) is located on the Alatna River about 2 miles downstream from the mouth of Helpmejack Creek. The location is accurate within 1 mile.
Geology: There was placer activity in the area for several years in the 1920's and 1930's, but no indication of its extent. Recent samples collected here contain small amounts of fine- to very fine-grained gold particles (Kurtak and others, 2002). This occurrence is probably similar to other bar deposits on the Koyukuk River. Although no bedrock occurs here, the rocks in the adjacent hills are Cretaceous graywacke, mudstone, and conglomerate, and Upper Jurassic mafic-volcanic rocks (Patton and Miller, 1966). No other information is available.
Workings: Prospecting and possibly a small amount of mining. There was placer activity in the area for several years in the 1920's and 1930's, but no indication of its extent.
Age: Quaternary.
Commodities (Major) - Au
Development Status: Undetermined.
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.
Gallery:
Other Databases
| Link to USGS - Alaska: | HU005 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Koyukuk north 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.
