Unnamed Occurrence (ARDF - ID151; near hill 1265), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
Regional Level Types | |
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Unnamed Occurrence (ARDF - ID151; near hill 1265) | - 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° 23' 31'' North , 156° 10' 12'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Mindat Locality ID:
200903
Long-form identifier:
mindat:1:2:200903:5
GUID (UUID V4):
b8db727d-ef67-4a32-9123-1f9b1aa6f312
Location: This occurrence is near hill 1265 on an northwest-trending ridge about 2 miles west of the Kuskokwim River. The occurrence is about 0.5 mile northeast of the center of section 32, T. 27 N., R. 37 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence is a zone of thin quartz veinlets with small tourmaline grains in a distinctively reddish colored, hematite-bearing sandstone of the Upper Cretaceous, Kuskokwim Group (Miller and Bundtzen, 1994). The sandstone strikes N42W and dips 50SW. The individual quartz veinlets are about one-eighth of an inch thick but there is no information on the overall size of the zone of quartz veinlets. A grab sample contained 150 parts per million (ppm) tin, 500 parts per billion (ppb) silver, 900 ppm zinc, 20 ppm arsenic, 960 ppb mercury, 1.9 ppm cadmium, and 2,000 ppm boron (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: Development of hematite and tourmaline.
Commodities (Major) - Ag, Sn; (Minor) - As, Cd, Hg, Zn
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
2 valid minerals.
Detailed Mineral List:
β Hematite Formula: Fe2O3 |
β Quartz Formula: SiO2 |
β 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 4 - Oxides and Hydroxides | |||
---|---|---|---|
β | Hematite | 4.CB.05 | Fe2O3 |
β | Quartz | 4.DA.05 | SiO2 |
Unclassified | |||
β | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
List of minerals for each chemical element
B | Boron | |
---|---|---|
B | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
O | Oxygen | |
O | β Hematite | Fe2O3 |
O | β Quartz | SiO2 |
O | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
Si | Silicon | |
Si | β Quartz | SiO2 |
Fe | Iron | |
Fe | β Hematite | Fe2O3 |
Other Databases
Link to USGS - Alaska: | ID151 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Farewell buried DomainDomain
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