Unnamed Occurrence (ARDF - MC212; north bank of Chitina River), Nizina Mining District, Valdez-Cordova Census Area, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - MC212; north bank of Chitina River)	- not defined -
Nizina 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 occurrence is at an elevation of about 2,000 feet on the north bank of the Chitina River, about 3 miles downstream of the terminus of Chitina Glacier. The occurrence is about 2,000 feet east of the center of section 32, T. 9 S., R. 21 E. of the Copper River Meridian. This is locality 16 of MacKevett (1976); the location is it is accurate to within about 1,000 feet.
Geology: This occurrence consists of malachite along fractures and unspecified copper-bearing minerals in quartz-epidote veins that cut Triassic Nikolai Greenstone (MacKevett, 1976, 1978). Copper mineralization is common in Nikolai Greenstone and is thought to have accompanied regional deformation and low-grade metamorphism in the Late Jurassic to Early Cretaceous (MacKevett and others, 1997).
Workings: Limited surface examination.
Age: Cretaceous? Copper mineralization is common in Nikolai Greenstone and is thought to have accompanied regional deformation and low-grade metamorphism in the Late Jurassic to Early Cretaceous (MacKevett and others, 1997).
Alteration: Quartz-epidote veining and replacement(?).

Commodities (Major) - Cu
Development Status: None
Deposit Model: Basaltic Cu (Cox and Singer, 1986; model 23)

Other Databases

Link to USGS - Alaska:	MC212

Other Regions, Features and Areas containing this locality

References