White Hawk

Prospect, Inactive

Commodities and mineralogy

Main commodities Ag; Au
Other commodities Cu; Pb; Sb; Zn
Ore minerals azurite; boulangerite; galena; goethite; hematite; malachite; pyrite; pyrrhotite; stibnite; tetrahedrite
Gangue minerals quartz; siderite

Geographic location

Quadrangle map, 1:250,000-scale MM
Quadrangle map, 1:63,360-scale C-2
Latitude 63.5358
Longitude -150.9451
Nearby scientific data Find additional scientific data near this location
Location and accuracy The White Hawk prospect is at an elevation of about 2150 feet on the north wall of the canyon of Eureka Creek, about three-quarters of a mile above its mouth. It is in the SW1/4 SE1/4 section 12. T. 16 S., R. 18 W., Fairbanks Meridian. The location is about at the center of the patented claim, and is accurate within about 300 feet. The prospect is number 15 of Bundtzen, Smith, and Tosdal (1976), 20 of Hawley and Associates (1978), 31 of Bundtzen (1981), and 34 of Thornsberry, McKee, and Salisbury (1984).

Geologic setting

Geologic description

The White Hawk prospect is in felsic(?) schist, close to a fault contact between Birch Creek Schist and felsic rocks of the Spruce Creek sequence (Thornsberry, McKee, and Salisbury, 1984, fig. K-2). The deposit consists of mineralized siderite-quartz veins. A hole (K-13), drilled by the U.S. Bureau of Mines in 1983, encountered pyrrhotite-bearing greenschist of Birch Creek type (Thornsberry, McKee, and Salisbury, 1984, fig. K-2; v. 2, occurrence 34). Early workings exposed siderite-quartz veins containing sphalerite, galena, pyrite, stibnite, tetrahedrite, and boulangerite and possibly other lead-antimony sulfides (Bundtzen, 1981). The sulfides are oxidized to azurite, goethite, hematite, and malachite.
Samples of dump material assayed as much as 24.5 percent lead, 32.5 percent zinc, 11 percent antimony, 11.6 ounces of silver per ton, and a small amount of gold (Thornsberry, McKee, and Salisbury, 1984, v. 2, occurrence 34). The prospect was developed by pits and a shallow shaft, largely sloughed. The claim discovery was on a 3-foot thick tetrahedrite-bearing vein of apparent NE strike. The vein probably continues southwesterly to a shallow shaft, where a similar 3-foot vein is exposed (Davis, 1923, p. 130).
Geologic map unit (-150.947385711482, 63.5352936879156)
Mineral deposit model Polymetallic vein (Cox and Singer, 1986; model 22c).
Mineral deposit model number 22c
Age of mineralization The deposit is assumed to be Eocene (see record MM091).
Alteration of deposit Oxidation of iron and copper minerals.

Production and reserves

Workings or exploration The vein was discovered and explored by pits and shallow shafts before 1922 (Davis, 1923). Some additional work was done by Seraphim (1962). The shallow workings are sloughed.
Indication of production None

Additional comments

The prospect is in Denali National Park and Preserve.

References