Notar Prospect, Delta River Mining District, Southeast Fairbanks Census Area, Alaska, USAi

Regional Level Types
Notar Prospect	Prospect
Delta River Mining District	Mining District
Southeast Fairbanks Census Area	Census Area
Alaska	State
USA	Country

Location: The Notar prospect is at an elevation of about 4,850 feet in the headwaters of an east-flowing tributary to the stream(s) in Broxson Gulch. It is in the NW1/4NW1/4 section 34, T. 18 S., R. 8 E., Fairbanks Meridian. The location is accurate within 1,000 feet.
Geology: The rock in the area of this prospect consists mainly of Upper Triassic serpentinized dunite that is part of a sill that can be followed for more than 5 miles (Rose, 1966 [ADMM GR 20, figure 3]). The sill is part of the informally named Eureka ultramafic complex (Nokleberg and others, 1991; W.T. Ellis, unpublished data, 1996). The mineral deposit consists of olivine melagabbro that contains as much as 7 percent disseminated sulfides and magnetite. The sulfides are mainly pyrrhotite and small amounts of chalcopyrite and pentlandite. Samples assayed as much as 0.11 percent copper, 0.17 percent nickel, 42 parts per billion (ppb) palladium, and 40 ppb platinum (W.T. Ellis, unpublished data, 1996).
Workings: The prospect is on active MAN Resources claims.
Age: Late Triassic, the age of the host rock.
Alteration: All of the ultramafic rock units are moderately to strongly serpentinized.

Commodities (Major) - Cu, Ni; (Minor) - Pd, Pt
Development Status: None
Deposit Model: Ni-Cu-PGE in differentiated mafic-ultramafic sill.

Other Databases

Link to USGS - Alaska:	MH112

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References