Unnamed (near Emerald Bay)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold; pyrite; pyrrhotite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SR
Quadrangle map, 1:63,360-scale D-5
Latitude 60.8048
Longitude -148.5669
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is located in the NW1/4 section 10, T. 8 N., R. 5 E., of the Seward Meridian. It is on the south side of Passage Canal about one-third of a mile east of the mouth of Emerald Bay. This is location S-177 of Jansons and others (1984). This location is accurate to within a quarter of a mile.

Geologic setting

Geologic description

This occurrence is in rocks of the Valdez Group of Late Cretaceous age. It consists of a 2- to 6-inch-wide quartz vein that contains pyrite, pyrrhotite, and traces of gold. The vein was discovered and sampled by the U.S. Bureau of Mines in 1981 (Jansons and others, 1984). Two samples contained traces of gold and base metals.
Geologic map unit (-148.569011730348, 60.8042062782057)
Mineral deposit model Low-sulfide Au-quartz vein (Cox and Singer, 1986; model 36a)
Mineral deposit model number 36a
Age of mineralization Cretaceous or younger; the vein intrudes rocks of the Valdez Group of Late Cretaceous age.

Production and reserves

Workings or exploration This occurrence was discovered by the U.S. Bureau of Mines in 1981 (Jansons and others, 1984). Two grab samples were collected that contained traces of gold and base metals.
Indication of production None

References