Cordova

Prospects, Probably inactive

Commodities and mineralogy

Main commodities Ag; Au; Cu
Ore minerals bornite; chalcopyrite; pyrite
Gangue minerals calcite; quartz

Geographic location

Quadrangle map, 1:250,000-scale DE
Quadrangle map, 1:63,360-scale D-2
Latitude 54.8955
Longitude -132.3642
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Cordova Group consists of 8 claims about one-quarter mile north of the abandoned village of Klinkwan. The claims are just west of the head of the northwest arm of Klinkwan Cove, near the center of the NW1/4 section 31, T. 80 S., R. 87 E.

Geologic setting

Geologic description

Just above the high tide line at the head of the northwest arm of Klinkwan Cove, a small pit exposes carbonaceous slate that is cut by quartz stringers that contain some pyrite and chalcopyrite (Wilcox, 1937 [PE 121-2]). Wilcox collected two samples of the most highly mineralized slate-quartz rock; the best one contained 2.08 ounces of gold per ton and 0.6 ounce of silver per ton. About one-quarter mile 'back' of Klinkwan, an outcrop of greenstone is highly fractured. The fractures, which vary from 1 to 10 inches wide, are filled with calcite that contain sparse, disseminated pyrite and chalcopyrite, some of which is altered to bornite. A sample of the most highly mineralized material contained only a trace of gold and silver. Gehrels (1992) has mapped the rocks in the area as mudstone and siltstone of the Devonian Karheen Formation; several major, northwest-trending faults are nearby.
Geologic map unit (-132.365862840716, 54.8951576162884)
Mineral deposit model Sulfide-bearing, quartz and calcite veinlets in slate and greenstone.
Age of mineralization The mineralized fractures cut Devonian rocks.

Production and reserves

Workings or exploration Only a few surface pits.
Indication of production None

Additional comments

These prospects are in the South Prince of Wales Wilderness, which is closed to prospecting and mineral exploration.

References