Unnamed (ridge between Yellow Creek and Rainy Creek)

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Other commodities Mo; Sb
Ore minerals arsenopyrite; pyrite
Gangue minerals calcite; quartz

Geographic location

Quadrangle map, 1:250,000-scale MM
Quadrangle map, 1:63,360-scale C-2
Latitude 63.5528
Longitude -150.8104
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is at an elevation of about 3350 feet in a minor saddle on the ridge between Yellow and Rainy Creeks. It is in the north part of the SE1/4 SE1/4 section 3, T. 16 S., R. 17 W., Fairbanks Meridian. The location is accurate within 300 feet. The prospect corresponds to number 210 of Hawley and Associates (1978), 43 of Bundtzen, Smith, Tosdal (1976), 49 of Bundtzen (1981), and 62 of Thornsberry, McKee, and Salisbury (1984).

Geologic setting

Geologic description

The country rocks in the area of this prospect are complexly faulted, lower Paleozoic Spruce Creek phyllite and semischist (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, fig. K-2).
The deposit is a sparsely mineralized, fault-controlled, quartz-calcite vein that strikes N 20-40 W and is nearly vertical. The vein is 5 to 6 feet thick and contains pyrite and arsenopyrite. Assays show up to 100 ppm molybdenum and a trace of gold.
Geologic map unit (-150.812683642591, 63.5522968049042)
Mineral deposit model Low-sulfide quartz-calcite vein.

Production and reserves

Workings or exploration The vein was prospected by a single pit.
Indication of production None

Additional comments

The prospect is in Denali National Park and Preserve.

References