Unnamed (northeast of 'Miller Mine')

Occurrence, Active

Commodities and mineralogy

Main commodities Ag; Cu; Pb
Other commodities Au
Ore minerals chalcopyrite; galena
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale MH
Quadrangle map, 1:63,360-scale B-4
Latitude 63.3473
Longitude -145.6968
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of 3,500 feet at the north end of Rainbow Ridge about 1.25 miles northeast of 'Miller Mine' on the Richardson Highway. It is at the northeast corner of section 19, T. 18 S., R. 11 E., Fairbanks Meridian. The occurrence corresponds to locality 1 in Hanson (1963), locality 15 in Cobb (1979 [OFR 79-238]), and locality S100 of table 2 in Nokleberg and others (1991).

Geologic setting

Geologic description

This occurrence consists of disseminated to massive chalcopyrite and galena in a small swarm of quartz veins as much as 3 inches wide (Hanson, 1963). The veins cut sedimentary and volcanic rocks of the Slana Spur Formation of Pennsylvanian age, which is locally intruded by granodiorite and dacite (Nokleberg and others, 1991). Samples of veins assay 1.6 to 1.7 percent copper, 2.0 to 2.1 percent lead, a trace of gold, and 2.4 ounces of silver per ton (Hanson, 1963).
Geologic map unit (-145.69905540885, 63.3468880784242)
Mineral deposit model Polymetallic veins (Cox and Singer, 1986; model 22c).
Mineral deposit model number 22c
Age of mineralization Permian(?) or younger.

Production and reserves

Workings or exploration
Samples of veins assay 1.6 to 1.7 percent copper, 2.0 to 2.1 percent lead, a trace of gold, and 2.4 ounces of silver per ton (Hanson, 1963).
The occurrence is on active claims of Northeast Exploration.
Indication of production None

References