Stibnite

Prospect, Active

Commodities and mineralogy

Main commodities Ag; Pb; Sb
Other commodities Au
Ore minerals argentiferous galena; pyrite; stibnite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale LG
Quadrangle map, 1:63,360-scale A-1
Latitude 65.0625
Longitude -147.4574
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Stibnite prospect is located just above the junction of Willow Creek and Cleary Creek in the NE1/4NW1/4 sec. 25, T. 3 N., R. 1 E., of the Fairbanks Meridian. The location is accurate.

Geologic setting

Geologic description

Note: As of 2008, this site and several others in the vicinity are being explored as a single entity by Freegold Ventures Inc. (Freeman, 2008) Considerable new mineralization has been discovered that indicates this is part of a larger mineralized system that is described as a separate ARDF site (LG207).
By 1916, the Stibnite prospect was being explored by the Eldorado Mining and Milling Company and it consisted of an open cut and a 40-foot shaft (Mertie, 1918). A 3- to 12-inch-thick shear zone contained 'commercial grade' lead and silver with minor gold. The principal ore minerals are argentiferous galena, stibnite and pyrite. The ore is in quartzite and is parallel to the schistosity of the country rock.
Geologic map unit (-147.459847532184, 65.0620765246906)
Mineral deposit model Lead, silver, antimony and gold mineralization in quartzite.
Age of mineralization About 90 Ma based on analogy with similar gold deposits nearby.
Alteration of deposit Not stated.

Production and reserves

Workings or exploration By 1916, the Stibnite prospect was being explored by the Eldorado Mining and Milling Company and it consisted of an open cut and a 40-foot shaft (Mertie, 1918).
Indication of production None

References

References

Freeman, C.J., 1992, 1991 Golden Summit project final report, volume 2: Historical summary of lode mines and prospects in the Golden Summit project area, Alaska: Avalon Development Corp., 159 p. (Report held by Freegold Recovery Inc. USA, Vancouver, British Columbia.)
Freeman, C.J., 2008, Executive summary report for the Golden Summit project, Fairbanks Mining District, Alaska: Unpublished Technical Report for Freegold Ventures Ltd., 112 p. (posted on www.sedar.com, March 31, 2008).
Reporters C.J. Freeman, J.R. Guidetti Schaefer (Avalon Development Corporation); D.J. Grybeck (Port Ludlow, WA)
Last report date 6/5/2008