Occurrence, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals pyrite

Geographic location

Quadrangle map, 1:250,000-scale FP
Quadrangle map, 1:63,360-scale D-5
Latitude 54.85
Longitude -163.4666
Nearby scientific data Find additional scientific data near this location
Location and accuracy 5 km northwest of False Pass community on Unimak Island. Anomaly no. 50 of Christie (1974) and no. 3, of MacKevett and Holloway (1977, p. 11).

Geologic setting

Geologic description

Christie (1974) briefly examined a northeast-trending elongate color anomaly 4,000 ft (1.2 km) by 1,500 ft (450 m) in size, developed in andesitic volcanic flows and pyroclastic rocks. Diorite was found in creek float but no outcrops were seen. Pyrite is disseminated both in the diorite and the volcanic rocks and its concentration ranges between 2 and 5 percent.
Geologic map unit (-163.468589121664, 54.8491148827483)
Mineral deposit model Epithermal gold vein
Mineral deposit model number 25
Age of mineralization Miocene or younger
Alteration of deposit Alteration is not described other than to mention of clay and possible local silicification.

Production and reserves

Workings or exploration Brief reconnaissance geologic mapping and collection of a few silt samples. One sample had 0.01 ppm gold. Occurrence apparently has not been adequately examined for epithermal gold vein potential.
Indication of production None

Additional comments

Quartz veining is not mentioned by Christie (1974), but this does not mean that it is absent, inasmuch as his focus was mainly on porphyry mineralization.


MRDS Number A106110


Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)
Reporters G.D. DuBois; F.H. Wilson
Last report date 5/6/1994