Unnamed (east of Toby Creek)

Commodities and mineralogy

Main commodities Cu
Other commodities Ag

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale B-4
Latitude 61.4557
Longitude -142.1765
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is on the ridge north of the glacier at the head of Toby Creek (MacKevett and Smith, 1972). It is at an elevation of about 8,000 feet near the northwest corner of section 10, T. 5 S., R. 18 E. of the Copper River Meridian. This is locality 63 of MacKevett (1976); the location is accurate to within about 100 feet.

Geologic setting

Geologic description

This occurrence consists of a 1- to 3-meter-wide altered zone is at the contact between Permian or Triassic gabbro and Permian sedimentary rocks (MacKevett and Smith, 1972; MacKevett, 1976). A sample of the altered rocks contained 2 parts per million (ppm) silver and 20,000 ppm copper.
Geologic map unit (-142.178557133841, 61.4552900945215)
Age of mineralization Permian or younger based on the age of the host rocks.

Production and reserves

Workings or exploration Limited surface sampling.
Indication of production None

Additional comments

The locality is in the Wrangell-Saint Elias National Park and Preserve.

References