|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 Last Chance mine is located in the NW1/4NE1/4 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 1,000 feet. It is about 1.8 miles east-southeast of the top of Ester Dome. This mine is included in locality 17 of Cobb (1972 [MF 410]).|
Geologic descriptionGold has been produced from a steeply dipping quartz vein that is two feet thick and contains arsenopyrite, stibnite, and visible gold. The vein strikes northeast and dips steeply northward (Davis, 1922, p. 59; Chapman and Foster, 1969, p. D18). One hundred and twenty-five tons of ore were mined from short drifts off a 60-foot shaft; the ore reportedly ran $30 in gold per ton (about 0.048 ounce of gold per ton) (Davis, 1922, p. 59-60).
|Geologic map unit||(-147.994430238009, 64.8745639743869)|
|Mineral deposit model||Schist-hosted gold-quartz vein|
|Workings or exploration||One hundred twenty-five tons of ore were mined from short drifts off a 60-foot shaft (Davis, 1922, p. 59-60).|
|Indication of production||Yes; small|
|Production notes||One hundred twenty-five tons of ore were mined from short drifts from a 60-foot shaft; the ore reportedly assayed $30 in gold per ton (about 1.45 ounces of gold per ton) (Davis, 1922, p. 59-60).|
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.
|Reporters||J.R. Guidetti Schaefer and C.J. Freeman (Avalon Development Corporation)|
|Last report date||7/31/2001|