|Quadrangle map, 1:250,000-scale||FB|
|Quadrangle map, 1:63,360-scale||D-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Fair Chance mine is located in the SW1/4NE1/4 sec. 32, T. 1 N., R. 2 W., Fairbanks Meridian. This deposit is near the head of Saint Patrick Creek at an elevation of about 1,100 feet. It is about 2 miles east-southeast of the top of Ester Dome. The mine is included in locality 17 of Cobb (1972 [MF 410]).|
Geologic descriptionConsiderable free gold is found at the Fair Chance mine n a mineralized zone that consists of crushed quartz mixed with blue gouge, crushed schist, and crushed quartzite (Chapin, 1914 [B 592-J, p. 3321-355]). This mineralized zone was opened by a shaft with drifts at the 18-foot and 40-foot levels. On the 40-foot level, the main mineralized zone is cut off by a fault that is oriented N. 30 E., 70 SE. Initial reports described the mineralized zone as dipping steeply to the southeast (Chapin, 1914B 592-J, p. 321-355]); however, later reports indicate the zone was oriented N. 20 E. with a dip of 60 degrees to the west (Hill, 1933, p. 139). By 1931, three shafts, about 50 feet apart, were reported (Hill, 1933, p. 139). Forty tons of ore were mined and milled in 1930, with disappointing results (Hill, 1933, p. 139). One grab sample assayed $5.95 in gold per ton (about 0.29 ounce of gold per ton) (Hill, 1933, p. 139). In 1931, on the nearby Blue Bird claim, a tunnel was driven to intersect what is probably the same zone as is found at the Fair Chance mine (Hill, 1933, p. 139).
|Geologic map unit||(-147.996429912989, 64.8715639211598)|
|Mineral deposit model||Schist-hosted gold-quartz vein|
|Workings or exploration||In 1914, the mineralized zone was opened by a shaft with drifts at the 18-foot and 40-foot levels (Chapin, 1914 [B 592-J, p. 321-355]). By 1931, three shafts about 50 feet apart were reported (Hill, 1933, p. 139).|
|Indication of production||Yes; small|
|Production notes||In 1930, forty tons of ore were mined and milled, with disappointing results (Hill, 1933, p. 139).|
Chapin, Theodore, 1914, Lode mining near Fairbanks, Alaska: U.S. Geological Survey Bulletin 592-J, p. 321-355.
Chapman, R.M., and Foster, R.L., 1969, Lode mines and prospects in the Fairbanks district, Alaska: U.S. Geological Survey Professional Paper 625-D, 25 p., 1 plate.
Cobb, E.H., 1972, Metallic mineral resources map of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-410, 1 sheet, scale 1:250,000.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Fairbanks quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-662, 174 p.
Eakin, H M., 1915, Mining in the Fairbanks district: U.S. Geological Survey Bulletin 622-G, p. 229-238.
|Reporters||J.R. Guidetti Schaefer and C.J. Freeman (Avalon Development Corporation)|
|Last report date||7/31/2001|