Unnamed (headwaters of Rick's Creek)

Prospect, Undetermined

Commodities and mineralogy

Main commodities W
Other commodities Ag; As; Au; Cu; Mn; Sb; Zn
Ore minerals arsenopyrite; chalcopyrite; pyrite
Gangue minerals carbonate; garnet; pyroxene

Geographic location

Quadrangle map, 1:250,000-scale BD
Quadrangle map, 1:63,360-scale D-2
Latitude 64.84
Longitude -144.95
Nearby scientific data Find additional scientific data near this location
Location and accuracy An occurrence noted by Albanese (1984) is located on a ridge in the headwaters of Rick's Creek (BD036). The occurrence is in SW1/4 section 9, T. 1 S., R. 14 E., of the Fairbanks Meridian. This occurrence is situated approximately 1 mile from another occurrence in the headwaters of Rick's Creek (BD041). It was not identified as a separate location by Cobb (1972) or by Cobb and Eberlein (1980).

Geologic setting

Geologic description

The occurrence noted by Albanese (1984) included the analysis of three samples: 1) a sulfide zone containing arsenopyrite, chalcopyrite, and pyrite. A rock sample from a trench in a garnet-diopside skarn contained 518 ppm Cu, 39 ppm Pb, 436 ppm Zn, 0.1 ppm Au, 1.3 ppm Ag, 1 ppm Mo, 222 ppm Sb, 20 ppm Sn, 60 ppm W, greater than 19,800 ppm As, and 686 ppm Mn; 2) an arsenopyrite-, chalcopyrite-, and pyrite-bearing calc-silicate contained 64 ppm Cu, 4 ppm Pb, 50 ppm Zn, 0.1 ppm Au, 0.4 ppm Ag, 2 ppm Mo, 10 ppm Sb, 4 ppm Sn, 900 ppm W, 213 ppm As, and 1,360 Mn; and 3) an arsenopyrite and pyrite bearing calc-silicate contained 462 ppm Cu, 34 ppm Pb, 37 ppm Zn, 4.3 ppm Ag, 1 ppm Mo, 4 ppm Sn, 450 ppm W, 818 ppm As, and 364 ppm Mn. Weber and others (1978) describe the regional bedrock as quartzite, slate, calc-phyllite and marble. The occurrence is located near the contact of a Tertiary to Cretaceous granodiorite to quartz monzonite intrusion.
Geologic map unit (-144.95237718777, 64.8396234681827)
Mineral deposit model Skarn.

Production and reserves

Workings or exploration Menzie and Foster (1979) noted the mineral occurrence during geologic mapping.
Indication of production Undetermined

References