Rob Roy

Mine, Inactive

Alternative names


Commodities and mineralogy

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

Geographic location

Quadrangle map, 1:250,000-scale LG
Quadrangle map, 1:63,360-scale A-1
Latitude 65.079
Longitude -147.304
Nearby scientific data Find additional scientific data near this location
Location and accuracy Cobb (1972, MF-413), loc. 51; NW1/4NE1/4 sec. 22, T. 3 N., R. 2 E., of the Fairbanks Meridian. This deposit is on the divide at the head of Too Much Gold Creek. Accuracy is within 1,500 feet.

Geologic setting

Geologic description

High grade gold mineralization occurs in a shear zone 30 feet wide that strikes N 60 W. The shear exhibits two mineralized zones that contain quartz with pyrite, gold and stibnite, as well as irregular or kidney-shaped pods of stibnite (Brooks, 1916; B 649). Intrusive breccia was noted to be present on the dump of the Rob Roby shaft (Pilkington, 1970). A small amount of ore was custom milled from a 100-foot shaft with 170 feet of drifts (Brooks, 1916; B 649). Operation were suspended in mid-1918 because of excess water in the workings (Martin, 1920).
Geologic map unit (-147.30644886851, 65.0785794432324)
Mineral deposit model Gold and stibnite in quartz shear zones.

Production and reserves

Workings or exploration Workings consisted of a 100 foot shaft and 170 feet of drifts on two levels (Brooks, 1916; B 649).
Indication of production Yes; small
Production notes A small amount of ore was custom milled but production figures are not known (Brooks, 1916; B 649).