Unnamed Occurrences (ARDF - TN012; Tozitna River; eastern Ray Mountains), Melozitna Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
65° 38' 38'' North , 150° 40' 12'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This site represents occurrences of geochemically anomalous rock samples in the eastern Ray Mountains, on ridges southeast of the Tozitna River. The site is at an elevation of about 3,100 feet, in the southwest quarter of section 34, T. 10 N., R. 15 W., of the Fairbanks Meridian. The location is accurate within 0.5 mile. This site roughly corresponds with the site for Ray Mountains, U.S. Bureau of Land Management MAS number 0020480132.
Geology: Chapman and others (1982) map the Tozitna River area as Rampart Group, Mississippian to Jurassic sedimentary and mafic volcanic rocks, along with abundant gabbro and sparse ultramafic rocks. Contacts between the mafic and ultramafic rocks are well defined, suggesting a zoned ultramafic complex (Barker, 1990). A small body of mafic and ultramafic rocks, including locally serpentinized peridotite, gabbro, and pyroxenite, occurs at this site (Barker, 1990; Foley, 1992). Samples of this body contained as much as 25 parts per billion (ppb) gold, 45 ppb palladium, and 40 ppb platinum (Foley, 1992).
Workings: The mafic and ultramafic rocks in this area were sampled in 1979 during a joint U.S. Bureau of Mines - U.S. Bureau of Land Management mineral resource evaluation. Samples of a small mafic-ultramafic body at this site contained as much as 25 parts per billion (ppb) gold, 45 ppb palladium, and 40 ppb platinum (Foley, 1992).
Commodities (Major) - Au, Pd, Pt
Development Status: None
Deposit Model: Noril'sk Cu-Ni-PGE(?) (Cox and Singer, 1986; model 5b), Podiform chromite(?) (C
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: | TN012 |
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Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Ruby DomainDomain
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