Unnamed Occurrence (ARDF - MH136; tributary of the east fork in Broxson Gulch), Delta River Mining District, Southeast Fairbanks Census Area, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - MH136; tributary of the east fork in Broxson Gulch)	- not defined -
Delta River Mining District	Mining District
Southeast Fairbanks Census Area	Census Area
Alaska	State
USA	Country

Location: This occurrence is at an elevation of about 4,700 feet in the headwaters of an unnamed east tributary to the east fork the stream(s) in Broxson Gulch. The occurrence is about a quarter-mile northeast of peak 4825 in section 29, T. 18 S., R. 9 E., Fairbanks Meridian. This occurrence corresponds to locality 54 in table 2 of Nokleberg and others (1991).
Geology: The rocks in the area of this occurrence are andesitic tuffs and breccias of the Slana Spur Formation of Late Paleozoic age (Nokleberg and others, 1991). The occurrence is about one-quarter mile north of the Airstrip Fault that bounds the Slana Spur unit on the south (Rose, 1965, figure 2). The mineral deposit consists of sheared and silicified metavolcanic graywacke; grab sample 79IL027E assayed 2.3 parts per million (ppm) gold, 150 ppm silver, and 30 ppm molybdenum (Nokleberg and others, 1991, locality 54, table 2).
Workings: The occurrence is on active MAN Resources claims.
Age: Possibly mid-Cretaceous, related to faulting and regional metamorphism (Nokleberg and others, 1982).
Alteration: Silicification of the host rock.

Commodities (Major) - Ag, Au; (Minor) - Mo
Development Status: None
Deposit Model: Low sulfide Au-quartz vein (?) (Cox and Singer, 1986; model 36a).

Other Databases

Link to USGS - Alaska:	MH136

Other Regions, Features and Areas containing this locality

References