Unnamed Occurrence (ARDF - MH169; south of upper Eureka Creek), Delta River Mining District, Southeast Fairbanks Census Area, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - MH169; south of upper Eureka Creek)	- not defined -
Delta River Mining District	Mining District
Southeast Fairbanks Census Area	Census Area
Alaska	State
USA	Country

Location: This occurrence is approximately located at an elevation of 4,000 feet, on the north-facing slope of a hill one mile south of upper Eureka Creek, and at the center of section 21, T. 19 S., R. 8 E., Fairbanks Meridian. The occurrence corresponds to locality 45 in table 2 of Nokleberg and others (1991).
Geology: The occurrence is in the Fish Lake ultramafic complex, a lopolithic feeder of basaltic flows of the Nikolai Greenstone of Late Triassic age (Wrangellia terrane) (Nokleberg and others, 1991). The occurrence consists of chromite disseminated in serpentinized olivine-rich cumulate. Grab sample 79ZN031A contained more than 5,000 parts per million chromium (Nokleberg and others, 1991, table 2).
Workings: The occurrence is covered by active Fort Knox Gold Resource claims.
Age: Late Triassic, the age of the host rock.
Alteration: Serpentinization.

Commodities (Major) - Cr
Development Status: None
Deposit Model: Chromite disseminated in a layered mafic-ultramafic complex.

Other Databases

Link to USGS - Alaska:	MH169

Other Regions, Features and Areas containing this locality

References