Hemple

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu; Zn
Ore minerals pyrrhotite
Gangue minerals epidote; quartz

Geographic location

Quadrangle map, 1:250,000-scale SR
Quadrangle map, 1:63,360-scale B-3
Latitude 60.325
Longitude -147.8058
Nearby scientific data Find additional scientific data near this location
Location and accuracy The occurrence is located near tidewater about a mile mile west of Chase island on the north shore of Drier Bay. It is in the NE1/4 section 25, T. 3 N., R. 9 E., of the Seward Meridian. This is location 224 of Cobb and Tysdal (1980) and location S-51 of Jansons and others (1984). This location is accurate to within a quarter of a mile.

Geologic setting

Geologic description

The occurrence consists of several 3-foot-wide intensely fractured and brecciated shear zones cutting greenstone of the Orca Group of early Tertiary age (Nelson and others, 1985). The deposit consists of quartz-epidote veins containing pyrrhotite. Samples collected from the site contained from 8 to 61 ppm copper and from 30 to 84 ppm zinc (Kurtak and Jeske, 1986).
Geologic map unit (-147.807865261763, 60.3244450061231)
Mineral deposit model Cyprus massive sulfide (Cox and Singer, 1986; model 24a)
Mineral deposit model number 24a
Age of mineralization Tertiary or younger; the mineralization is in rocks of the Orca Group of Tertiary age.

Production and reserves

Workings or exploration Samples collected from the site contained from 8 to 61 ppm copper and from 30 to 84 ppm zinc (Kurtak and Jeske, 1986). No workings or improvements are reported.
Indication of production None

References