Unnamed Occurrence (ARDF - MH242; north of the glacier at the head of the West Fork Robertson River), Delta River Mining District, Southeast Fairbanks Census Area, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - MH242; north of the glacier at the head of the West Fork Robertson River)	- not defined -
Delta River Mining District	Mining District
Southeast Fairbanks Census Area	Census Area
Alaska	State
USA	Country

Unpublished data cited is available for viewing by contacting Grayd Resources Inc. in Vancouver, B. C., Canada (www.grayd.com), or Northern Associates Inc. in Fairbanks, Alaska.
Location: This unnamed occurrence is in the rugged mountains between the Johnson Glacier and the unnamed glacier at the head of the West Fork Robertson River. It is at an elevation of about 6,400 feet and 8.1 miles east-southeast of Mount Gakona, in the NW1/4SW1/4 section 32, T. 18 S., R. 15 E., Fairbanks Meridian. The location is accurate.
Geology: During reconnaissance work in 1978, Resource Associates of Alaska, Inc. discovered mineralized dolomite-quartz breccia with disseminated sphalerite and galena in talus (R.A. Blakestad and others, unpublished Resource Associates of Alaska Inc. report, 1978). There is no record of any additional exploration work at this site. The rock assayed 2 to 5 percent zinc, 1.5 percent lead, and 2 to 3 ounces of silver per ton. This occurrence is in metavolcanic and subordinate metasedimentary rocks that are included in the Hayes Glacier subterrane, which is Devonian and older (Nokleberg and others, 1992).
Workings: During reconnaissance work in 1978, Resource Associates of Alaska, Inc. discovered mineralized dolomite-quartz breccia with disseminated sphalerite and galena in talus (Rodney A. Blakestad and others, unpublished Resource Associates of Alaska Inc. report, 1978). There is no record of any further work at this site.
Age: Devonian and older, on the basis of the age of the host rock, which is in the Hayes Glacier subterrane (Nokleberg and others, 1992).

Commodities (Major) - Pb, Zn
Development Status: None
Deposit Model: Kuroko massive sulfide (Cox and Singer, 1986; model

Other Databases

Link to USGS - Alaska:	MH242

Other Regions, Features and Areas containing this locality

References