Unnamed (ridge between Allen and California Creeks)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au; Cu; Zn
Other commodities Fe; P

Geographic location

Quadrangle map, 1:250,000-scale TN
Quadrangle map, 1:63,360-scale A-1
Latitude 65.23309
Longitude -150.35932
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 2,150 feet, at the top of a southwest-trending ridge between Allen and California Creeks. The site is at Alaska Division of Geological and Geophysical Surveys (ADGGS) sample station 97SL015B (Liss and others, 1998), in the northeast quarter of section 26, T. 5 N., R. 14 W., of the Fairbanks Meridian. The location is accurate within 500 feet.

Geologic setting

Geologic description

Bedrock on the ridge between Allen and California creeks consists of Triassic to Permian conglomerate, argillite, sandstone, and shale (Reifenstuhl and others, 1998). The rocks form a northeast-trending syncline that is in thrust-fault contact with Mesozoic metasedimentary rocks to the south and with Paleozoic or older rocks to the north. Cretaceous monzodiorite crops out about 2 miles south and southeast of this area (Reifenstuhl and others, 1998).
A sample (97SL015B) of conglomerate on the ridgeline between Allen and California creeks contained 300 parts per million (ppm) gold, 1,015 ppm copper, 13.95 percent iron, 2,810 ppm phosphorus, and 814 ppm zinc (Liss and others, 1998). The sample was not visibly altered or mineralized. There is no record of exploration or mining at this site.
Geologic map unit (-150.361813648853, 65.2326103557556)
Mineral deposit model Possibly epithermal or mesothermal veins.

Production and reserves

Workings or exploration A sample (97SL159) of a gouge zone in shale and siltstone on the west side of Silverbow Creek near its junction with Hutlinana Creek contained 1,210 parts per million (ppm) arsenic, 1,270 ppm phosphorous, and 38 ppm antimony (Liss and others, 1998). A sample (97SL158b) of a quartz vein at this site contained 190 ppm arsenic. There is no record of exploration or mining at this site.
Indication of production None

References