Unnamed (Latouche island near Reynolds Peak)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu; Zn
Ore minerals chalcopyrite; pyrite

Geographic location

Quadrangle map, 1:250,000-scale SR
Quadrangle map, 1:63,360-scale A-3
Latitude 60.0157
Longitude -147.8616
Nearby scientific data Find additional scientific data near this location
Location and accuracy The occurrence is located in the SW1/4 section 11, T. 2 S., R. 9 E., of the Seward Meridian. It is near the shoreline about 0.8 mile northeast of Reynolds Peak. This is location 265 of Tysdal (1978 [MF-880-A]) and location S-8 of Jansons and others (1984). The location is accurate to within a quarter of a mile.

Geologic setting

Geologic description

The occurrence consists of a limonite-stained gossan that contains pyrite and chalcopyrite. The gossan zone is 4 feet wide and more than 45 feet long (Tysdal, 1978 [MF-880-A]). Tysdal (1978 [MF-880-A]) reported a semiquantitative spectrographic analysis of the gossan is 700 ppm copper, and 500 ppm zinc. The host rock is altered slate and sandstone of the Orca Group of early Tertiary age (Nelson and others, 1985).
Geologic map unit (-147.863599326076, 60.0150472742366)
Mineral deposit model Besshi massive sulfide (Cox and Singer, 1986; model 24b)
Mineral deposit model number 24b
Age of mineralization Tertiary or younger; the mineralization is in rocks of the Orca Group of Tertiary age.
Alteration of deposit The host rock is altered, but the type of alteration is not reported (Tysdal, 1978 [MF-880-A]).

Production and reserves

Indication of production None

References