Sulphide Gulch

Prospect, Probably inactive

Commodities and mineralogy

Main commodities Cu
Other commodities Ag; Au; Zn
Ore minerals chalcopyrite; pyrite; pyrrhotite; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale VA
Quadrangle map, 1:63,360-scale A-6
Latitude 61.0026
Longitude -146.0973
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is in the upper valley of an unnamed south tributary to the lower Lowe River. The mouth of this tributary is 3.3 miles upstream from Canyon Slough. This prospect is on this creek in the NW1/4 section 15, T. 10 S., R. 5 W., of the Copper River Meridian. This prospect is probably located to within one-half mile. It is locality 33B of Winkler and others (1981 [OFR 80-892-B]).

Geologic setting

Geologic description

Stratiform lenses and disseminations of sulfide minerals occur in mafic metavolcanic rocks and metasedimentary rocks of the Valdez Group; sulfide minerals include chalcopyrite, pyrite, pyrrhotite, and sphalerite (Winkler and others, 1981 [OFR 80-892-B]). The metavolcanic rocks probably represent ocean floor basalts that were accreted with the enclosing flysch of the Valdez Group (Winkler and others, 1981 [OFR 80-892-A].
Geologic map unit (-146.099312717384, 61.0020812412624)
Mineral deposit model Cyprus massive sulfide (Cox and Singer, 1986; model 24a)
Mineral deposit model number 24a
Age of mineralization Late Cretaceous; the host metavolcanic rocks probably represent ocean floor basalts that were accreted with the enclosing flysch of the Valdez Group (Winkler and others, 1981 [OFR 80-892-A]).
Alteration of deposit Oxidation; the deposits are iron stained (Winkler and others, 1980 [OFR 80-892-B]).

Production and reserves

Workings or exploration Only reconnaissance surface examinations have been carried out.
Indication of production None

References