Unnamed

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals pyrite
Gangue minerals tourmaline

Geographic location

Quadrangle map, 1:250,000-scale FP
Quadrangle map, 1:63,360-scale D-4
Latitude 54.8667
Longitude -163.2833
Nearby scientific data Find additional scientific data near this location
Location and accuracy Approximate location is given as 2 to 3 mi (3.2 to 5 km) southeast of site of village of Morzhovoi at headwaters of creek flowing north into Traders Cove. Anomaly no. 51 of Christie (1974) and no. 5 of MacKevett and Holloway (1977, p. 11).

Geologic setting

Geologic description

Christie (1974) briefly examined an oval color anomaly (gossan) 8,000 by 6,000 ft (2.4 by 1.8 km) in size developed within volcanic and plutonic rocks. Pyrite is disseminated within discrete 50 to 200 ft (15 to 60 m) wide zones in bleached volcanic rocks at the outer margin of the gossan. Pyrite may be more pervasive in rocks underlying the drift covered valley floor, an area covering 1.2 by 0.9 km. A diorite pluton intrudes the volcanic rocks and the sulfide zone is localized within and adjacent to pluton. Minor amounts of sulfides are localized in fractures and quartz veins fill some fractures in a stockwork. Minor breccia is found in float and is characterized by tourmaline rosettes developed in proximity to pyrite grains.
Geologic map unit (-163.285289039677, 54.8658196305967)
Mineral deposit model Epithermal gold vein
Mineral deposit model number 25
Age of mineralization Miocene or younger
Alteration of deposit Propylitic alteration is developed in the diorite as evidenced by the presence of chlorite and epidote. Hydrothermal feldspar and clay is mentioned as present within the color anomaly but not otherwise described.

Production and reserves

Workings or exploration Brief reconnaissance geologic mapping and a few silt samples collected by Christie (1974). Two of eight samples had 0.02 ppm gold; it does not appear occurrence is adequately examined for epithermal gold vein potential.
Indication of production None

Additional comments

Quartz veining is briefly mentioned which supports the potential for epithermal gold veins.

References

MRDS Number A106105

References

Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps.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