Richards Occurrence, Valdez Creek Mining District, Southeast Fairbanks Census Area, Alaska, USAi

Regional Level Types
Richards Occurrence	Occurrence
Valdez Creek Mining District	Mining District
Southeast Fairbanks Census Area	Census Area
Alaska	State
USA	Country

Kurtak and others (1992) proposed that additional prospecting was needed.
Location: This occurrence is at an elevation of 4,000 feet northwest of the west end of Seven Mile Lake, in the SW1/4NW1/4 section 11, T. 20 S., R. 7 E., Fairbanks Meridian. It is Kardex site number KX68-086 (Heiner and Porter, 1972).
Geology: The area near the Richards claims is mostly colluvium overlying Nikolai Greenstone of Late Triassic age (Nokleberg and others, 1991). Bedrock, where exposed, consists of metabasalt, locally altered, cut by quartz-epidote veins. Sample 2811 of limonite-stained altered metabasalt cut by quartz veins was essentially barren (Kurtak and others, 1992, table A23), but the U.S. Bureau of Mines spent little time in the area and noted that more prospecting was needed. The Richards claims were located for copper, iron, gold, and silver (Heiner and Porter, 1972). Primary ore mineralogy is unknown.
Workings: The ten Richards claims were staked in 1964-1966 by Northland Mines (Heiner and Porter, 1972; Kurtak and others, 1992). A sample collected from altered metabasalt cut by quartz veinlets was barren (Kurtak and others, 1992). The area is now covered by claims staked by MAN Resources, which mostly are for platinum and associated metals (W.T. Ellis, written communication, 2001).
Alteration: Locally 'altered', probably propylitized basalt (Kurtak and others, 1992).

Commodities (Major) - Cu (?); (Minor) - Ag, Au, Fe
Development Status: None
Deposit Model: Basaltic Cu (?) (Cox and Singer, 1986; model 23).

Other Databases

Link to USGS - Alaska:	MH075

Other Regions, Features and Areas containing this locality

References