Geologic descriptionIron-stained lenses and quartz veins in mafic metavolcanic rocks of the Late Cretaceous Valdez Group contain pyrite, chalcopyrite, galena, and sphalerite (Winkler and others, 1981 [OFR 80-892-B]). The sulfide minerals are disseminated in the mafic metavolcanic rocks and in the quartz veins. The metavolcanic rocks probably represent ocean floor basalts that were accreted with the flysch of the Valdez Group (Winkler and others, 1981 [OFR 80-892-A]). |
Geologic map unit |
(-145.804671534824, 61.2538907850514) |
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 flysch of the Valdez Group (Winkler and others, 1981 [OFR 80-892-A]). |
Alteration of deposit |
Oxidation; mineralized zones are iron stained. |