London and Cape Prospect, Chistochina Mining District, Valdez-Cordova Census Area, Alaska, USAi

Regional Level Types
London and Cape Prospect	Prospect
Chistochina Mining District	Mining District
Valdez-Cordova Census Area	Census Area
Alaska	State
USA	Country

The locality is in the Wrangell-Saint Elias National Park and Preserve.
Location: This prospect is on the ridge between MacDougal and Trail creeks. It is at an elevation of about 4,600 feet, 700 feet northeast of elevation 5120, and about 1,500 feet east-northeast of the center of section 35, T. 3 S., R. 9 E. of the Copper River Meridian. This is locality 129 of MacKevett (1976) and locality 33 of MacKevett and others (1978). The location is accurate to within 100 feet. Cobb and MacKevett (1980) included this prospect under the name 'London & Cape (Co.)'.
Geology: This prospect consists of pyrite-and chalcopyrite-bearing veinlets and disseminations in locally altered Jurassic granodiorite (MacKevett, 1976; MacKevett and others, 1978). Samples of the mineralization contain up to 1.5 parts per million (ppm) silver, 20,000 ppm copper, and 70 ppm molybdenum but most samples contain less than 1,000 ppm copper. Fourteen claims were patented in 1909 and early exploration included a 245-foot-long adit (Moffit and Mertie, 1923). Some exploration took place in the 1970s (MacKevett, 1976).
Workings: Fourteen claims were patented in 1909 and early exploration included a 245-foot-long adit (Moffit and Mertie, 1923). Some exploration took place in the 1970s (MacKevett, 1976).
Age: Jurassic. The age of the host intrusive rock is Late Jurassic.
Alteration: Alteration is present but it has not been described. Iron-staining is probably present.

Commodities (Major) - Cu; (Minor) - Ag, Mo
Development Status: None
Deposit Model: Porphyry Cu (Cox and Singer, 1986; model 17)

Other Databases

Link to USGS - Alaska:	MC060

Other Regions, Features and Areas containing this locality

References