Unnamed Occurrence (ARDF - ID145; east of Little Waldren Fork), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
Regional Level Types | |
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Unnamed Occurrence (ARDF - ID145; east of Little Waldren Fork) | - not defined - |
Iditarod Mining District | Mining District |
Yukon-Koyukuk Census Area | Census Area |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
62° 28' 3'' North , 156° 44' 38'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
200897
Long-form identifier:
mindat:1:2:200897:7
GUID (UUID V4):
22d95284-ef86-422a-91be-a2035afb5e65
Location: This occurrence is on an northwest-trending ridge about 5 miles east of the Little Waldren Fork of the Takotna River. The occurrence is at an elevation of about 1,600 feet, about 0.3 mile north of hill 1790. The occurrences is about 0.6 mile southwest of the center of section 32, T. 28 N., R. 40 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence is a zone of iron-oxide-stained sandstone breccia that is locally healed by quartz (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). The mineralized zone is of uncertain size and orientation. A prospect pit explored a similar breccia zone about 0.6 mile east of this occurrence; however, we did not sample it. One grab sample of sandstone breccia contained 420 parts per billion (ppb) mercury, 20 parts per million (ppm) antimony, and 20 ppm arsenic (McGimsey and others, 1988).
Workings: Samples were collected by the U.S. Geological Survey in 1986 (McGimsey and others, 1988).
Alteration: Iron oxide staining.
Commodities (Major) - Hg, Sb; (Minor) - As
Development Status: None
Deposit Model: Polymetallic vein? (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 | |||
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ⓘ | Quartz | 4.DA.05 | SiO2 |
Unclassified | |||
ⓘ | 'Limonite' | - |
Other Databases
Link to USGS - Alaska: | ID145 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Farewell buried DomainDomain
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