Unnamed Occurrence (ARDF - MC197; east of Chakina River), Nizina Mining District, Valdez-Cordova Census Area, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - MC197; east of Chakina 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 on a ridge crest east of the Chakina River. It is at an elevation of about 5,800 feet, about 1,000 feet southeast of peak 6015 and about 3,000 feet northwest of peak 6165. The site is in the NW1/4 of section 19, T. 9 S., R. 14 E. of the Copper River Meridian. This is locality 20 of MacKevett (1976); it is probably accurate to within about 500 feet.
Geology: This occurrence consists of serpentinized ultramafic rocks with minor chromite and disseminated sulfide minerals. A sample contained 10 percent magnesium, 150 parts per million (ppm) cobalt, 3,000 ppm copper, and 2,000 ppm nickel (MacKevett, 1976). The host alpine-type ultramafic body which is about 1.5 mile long and 0.2 mile wide is within upper Paleozoic metamorphic rocks (MacKevett, 1978).
Alteration: Sepentinization.

Commodities (Major) - Cr, Ni; (Minor) - Co
Development Status: None
Deposit Model: Podiform chromite (Cox and Singer, 1986; model 8a)

Other Databases

Link to USGS - Alaska:	MC197

Other Regions, Features and Areas containing this locality

References