Unnamed Occurrence (ARDF - RM020; southern Russian Mountains), Aniak Mining District, Bethel Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - RM020; southern Russian Mountains) | - not defined - |
| Aniak Mining District | Mining District |
| Bethel Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
61° 38' 9'' North , 159° 6' 3'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Chuathbaluk | 125 (2017) | 10.4km |
| Aniak | 528 (2017) | 23.2km |
Location: This occurrence is in the Russian Mountains about 0.7 mile southeast of peak 2815. The map site is on a ridge crest, at an elevation of about 2,500 feet, about 0.25 mile east of the center of sec. 20, T. 18 N., R. 54 W., of the Seward Meridian. It is sample localities 16 and 17 of Bundtzen and Laird (1991).
Geology: This occurrence consists of two gossan-rich quartz veins, as much as 1.5 feet wide, along northwest-trending joints and fractures in quartz syenite (Bundtzen and Laird, 1991). Sulfide minerals were not identified in these strongly oxidized veins. Samples contained up to 0.3 percent arsenic, 1.5 percent antimony, 353 ppm neodymium, 54 ppm tantalum, and 52 ppm uranium. The host quartz syenite is part of the Late Cretaceous intrusive complex of the Russian Mountains (Bundtzen and Laird, 1991).
Workings: Surface observation and sampling has been completed.
Age: Late Cretaceous or Tertiary. Veins crosscut part of the intrusive complex of the Russian Mountains. Quartz monzonite from this complex has yielded a K/Ar age of 70.3 +/- 2.1 Ma (Bundtzen and Laird, 1991).
Alteration: Quartz veining.
Commodities (Major) - Sb; (Minor) - Nd, Ta, U
Development Status: None
Deposit Model: Polymetallic veins? (Cox and Singer, 1986; model 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
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: | RM020 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell buried DomainDomain
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