Unnamed (Big Denver Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Other commodities As; P

Geographic location

Quadrangle map, 1:250,000-scale TN
Quadrangle map, 1:63,360-scale A-2
Latitude 65.00627
Longitude -150.89642
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 700 feet, on the south side of Big Denver Creek, approximately 2 miles below the Big Denver Creek placer mine (TN095). The site is at Alaska Division of Geological and Geophysical Surveys (ADGGS) sample station 97SL153 (Liss and others, 1998), near the northwest corner of section 18, T. 2 N., R. 16 W., of the Fairbanks Meridian. The location is accurate within 500 feet.

Geologic setting

Geologic description

Bedrock at this occurrence is mainly Lower Cretaceous sandstone, shale, and siltstone (Reifenstuhl and others, 1998). The western contact of the Tertiary Hot Springs granite pluton is 2 miles to the east.
Samples (97SL153B and 97SL153C) of a felsic dike and of iron-stained shale on the south side of Big Denver Creek contained one or more of the following maximum values: 2,230 parts per million (ppm) copper, 266 ppm arsenic, 13.55 percent iron, 3,130 ppm phosphorus, and 14 ppm scandium (Liss and others, 1998). There is no record of exploration or mining at this site.
Geologic map unit (-150.898885308082, 65.005772753597)
Mineral deposit model Possibly epithermal, polymetallic, or mesothermal veins.

Production and reserves

Workings or exploration Samples (97SL153B and 97SL153C) of a felsic dike and of iron-stained shale on the south side of Big Denver Creek contained one or more of the following maximum values: 2,230 parts per million (ppm) copper, 266 ppm arsenic, 13.55 percent iron, 3,130 ppm phosphorous, and 14 ppm scandium (Liss and others, 1998). There is no record of exploration or mining at this site.
Indication of production None

References