Sulphide Gulch Occurrence, Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi

Regional Level Types
Sulphide Gulch Occurrence	Occurrence
Prince William Sound Mining District	Mining District
Valdez-Cordova Census Area	Census Area
Alaska	State
USA	Country

Location: This occurrence is apparently on an unnamed south tributary to the lower Lowe River. The mouth of this tributary is 3.3 miles upstream from Canyon Slough. Cobb and Matson (1972, locality 79) call this occurrence 'Sulphide Gulch', but USGS topographic maps show Sulphide Gulch about a mile west of Canyon Slough. The location shown by Cobb and Matson (1972, locality 79) is used here; it is at the center of section 11, T. 10 S., R. 5 W., of the Copper River Meridian. The accuracy of this location is uncertain.
Geology: Heavy mineral concentrate from stream gravels at this occurrence contained gold, scheelite, chalcopyrite, pyrite, limonite, pyroxene, garnet, and zircon (Rose, 1965). Bedrock in the area is greenschist-facies metaflysch of the Late Cretaceous Valdez Group (Winkler and others, 1981 [OFR 80-892-A]). Gold-bearing quartz veins are widespread through the Valdez Group in the southern Valdez quadrangle (Cobb and Matson, 1972). Two massive sulfide prospects in mafic metavolcanic rocks of the Valdez Group (VA134 and VA143) are located upstream from this occurrence (Winkler and others, 1981 [OFR 80-892-B]).
Workings: Only reconnaissance sampling has been done.
Age: Holocene.

Commodities (Major) - Au; (Minor) - Cu, W
Development Status: None
Deposit Model: Placer Au (Cox and Singer, 1986; model 39a)

Other Databases

Link to USGS - Alaska:	VA135

Other Regions, Features and Areas containing this locality

References