Unnamed (north of Kankone Peak)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag
Other commodities Pb
Ore minerals galena; pyrite; sphalerite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale MM
Quadrangle map, 1:63,360-scale C-2
Latitude 63.6302
Longitude -150.5994
Nearby scientific data Find additional scientific data near this location
Location and accuracy
This occurrence is at an elevation of about 4300 feet, about 2500 feet due north of Kankone Peak. It is in the SW1/4 NW1/4 section 11, T. 15 S., R. 16 W., Fairbanks Meridian. The location is accurate within 300 feet.
The occurrence corresponds to number 62 of Bundtzen, Smith, and Tosdal (1976), 290 of Hawley and Associates (1978), and 69 of Bundtzen (1981). Its location is the same as occurrence 100 of Thornsberry, McKee, and Salisbury (1984), but their description of the geology does not agree with that of the earlier workers.

Geologic setting

Geologic description

The country rocks in the area of this occurrence are quartzite and mica-quartz schist of the upper Precambrian Birch Creek Schist. The schistosity strikes NE and dips SE (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, fig. K-2). The occurrence consists of mineralized quartz veins in a shear zone. The shear zone is 15 to 30 feet wide; it trends NE, and can be traced more than 300 feet. The quartz contains pyrite, small amounts of galena, and, probably, sphalerite or an oxidized zinc mineral. Samples of the veins assay up to a half-ounce of silver per ton, 0.47 percent lead, 0.47 percent zinc, 300 ppm copper, 230 ppm antimony, and 44 ppm molybdenum. Gold was not detected. (Hawley and Associates, 1978; Bundtzen, 1981).
Geologic map unit (-150.601688002882, 63.6297029666103)
Mineral deposit model Weakly mineralized silicified shear zone.
Age of mineralization The deposit is assumed to be Eocene (see record MM091).
Alteration of deposit Silicification.

Production and reserves

Workings or exploration Exposures along the shear zone are mostly rubble crop. There are no workings.
Indication of production None

Additional comments

The occurrence is in Denali National Park and Preserve.

References