Unnamed Occurrence (ARDF - MM155; upper East Fork of Clearwater Creek), Kantishna Mining District, Denali Borough, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - MM155; upper East Fork of Clearwater Creek)	- not defined -
Kantishna Mining District	Mining District
Denali Borough	Borough
Alaska	State
USA	Country

The occurrence is within Denali National Park and Preserve.
Location: This occurrence is on the east side of a prominent ridge in the upper part of the East Fork of Clearwater Creek. The ridge lies between two north-flowing tributaries to the East Fork. Its position is known only from a location by Reed (1961) on a 1:250,000-scale map. The occurrence is probably a few hundred feet east of the center of section 36, T. 18 S., R. 16 W., Fairbanks Meridian, between 4000 and 4500 feet elevation. The location is probably correct within one-half mile. A nearby deposit is described in record MM154.
Geology: This mineral occurrence is in the Eocene or Oligocene McGonagall pluton (Reed and Lanphere, 1974; Cole, 1998). Reed (1961, explanation on plate 1) described the occurrence only as a mixed sulfide deposit consisting mainly of pyrrhotite and sphalerite, accompanied by lesser amounts of galena, pyrite, and chalcopyrite. The deposit is inferred to be Oligocene, roughly contemporaneous with the Eocene or Oligocene emplacement age of the McGonagall pluton.
Workings: The occurrence is known only from a map location. No claims are known to have been filed on it.
Age: The deposit is inferred to be Oligocene, roughly contemporaneous with the Eocene or Oligocene emplacement age of the McGonagall pluton (Reed and Lanphere, 1974; Cole, 1998).

Commodities (Major) - Zn; (Minor) - Ag(?), Au(?), Cu, Pb
Development Status: None
Deposit Model: Pluton-hosted, polymetallic lode (Cox and Singer, 1986; model 22c).

Other Databases

Link to USGS - Alaska:	MM155

Other Regions, Features and Areas containing this locality

References