Log In
Unnamed Occurrence (ARDF - ID157; north of Return Creek), Iditarod Mining District, Bethel Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - ID157; north of Return Creek) | - not defined - |
| Iditarod Mining District | Mining District |
| Bethel Census Area | Census Area |
| Alaska | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
62° 3' 5'' North , 158° 30' 21'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Crooked Creek | 105 (2016) | 28.8km |
Location: This occurrence is on a ridge about 0.4 mile north of Return Creek, a tributary of Montana Creek. The occurrence is at an elevation of about 950 feet; it is about 0.2 mile east-northeast of hill 904 and 0.3 mile southeast of the center of section 30, T. 23 N., R. 50 W., of the Seward Meridian. The location is approximate.
Geology: This occurrence consists of quartz-carbonate veins in reddish-orange, iron- oxide-stained volcanic flows and tuffs of the Iditarod volcanics (Miller and Bundtzen, 1988). Locally the volcanic rocks are cut by thin altered felsic dikes (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). As seen in rubble crop, the individual quartz-carbonate veins are up to 4 inches thick. There are shallow prospect pits adjacent to the quartz-carbonate veins. A grab sample of the vein material contained 930 parts per billion (ppb) mercury, 110 parts per million (ppm) arsenic, and 10 ppm antimony (McGimsey and others, 1988).
Workings: Samples were collected by the U.S. Geological Survey and Alaska Division of Geological and Geophysical Surveys in the 1980s (McGimsey and others, 1988).
Alteration: Iron oxide alteration of volcanic rocks.
Commodities (Major) - Hg, Sb; (Minor) - As
Development Status: None
Deposit Model: Quartz-carbonate veins.
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:
| ⓘ 'Limonite' |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
Other Databases
| Link to USGS - Alaska: | ID157 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell buried 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.
