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Unnamed Occurrences (ARDF - TN110; northeast of Manley Hot Springs Dome), Hot Springs Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
65° 2' 14'' North , 150° 42' 14'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: These occurrences are approximately 1.2 miles northeast of Manley Hot Springs Dome. The site is at the top of hill 2456, at Alaska Division of Geological and Geophysical Surveys (ADGGS) sample station 97RN142A (Liss and others, 1998), in the southeast quarter of section 36, T. 3 N., R. 16 W., of the Fairbanks Meridian. The location is accurate within 500 feet.
Geology: Bedrock at thse occurrences is locally brecciated, mainly Lower Cretaceous sandstone, shale, and siltstone that has been hornfelsed by the Tertiary Hot Springs granite pluton (Reifenstuhl and others, 1998). The hornfels consists of black, dense rock that contains unoriented crystals or rosettes of muscovite, biotite, and, locally, andalusite. The northwestern contact of the Hot Springs pluton is about 1,000 feet to the south. The breccia may be due to high-angle faulting. Several samples (97KC049A, 97KC049B, and 97RN142A) of gossaneous hornfels and breccia on eastern Bean Ridge contained one or more of the following maximum geochemical values: 471 parts per million (ppm) copper, more than 15 percent iron, 4,400 ppm manganese, 162 ppm lead, and 804 ppm zinc (Liss and others, 1998). There is no record of exploration or mining at this site.
Workings: Several samples (97KC049A, 97KC049B, and 97RN142A) of gossaneous hornfels and breccia on eastern Bean Ridge contained one or more of the following maximum geochemical values: 471 parts per million (ppm) copper, more than 15 percent iron, 4,400 ppm manganese, 162 ppm lead, and 804 ppm zinc (Liss and others, 1998). There is no record of exploration or mining at this site.
Commodities (Major) - Cu, Zn; (Minor) - Fe
Development Status: None
Deposit Model: Possibly epithermal, polymetallic, or mesothermal veins related to the Hot Spri
Commodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.List of minerals for each chemical element
Other Databases
| Link to USGS - Alaska: | TN110 |
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Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Arctic AlaskaPassive Margin
- Wickersham DomainDomain
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