Last Chance

Mine, Inactive

Commodities and mineralogy

Main commodities Au
Other commodities Sb
Ore minerals arsenopyrite; gold; stibnite

Geographic location

Quadrangle map, 1:250,000-scale FB
Quadrangle map, 1:63,360-scale D-2
Latitude 64.875
Longitude -147.992
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 setting

Geologic description

Gold 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

Production and reserves

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).

References