Description
Alaska Helicopter Syndicate
Commodities
PrimaryCopper, Zinc
TertiaryGold, Lead, Silver
Commodity typeM
Deposit
Deposit sizeN
Orebody formLENS, TABULAR
Ore controlLocalized Along Crest Of Anticline And Parallel Folds, Follow Brecciated Fault Zones
Materials
Ore mineralsBornite, Chalcocite, Chalcopyrite, Galena, Gold, Malachite, Sphalerite
GanguePyrite, Pyrrhotite, Quartz
Geology
Host rockGneiss
Associated rockHornblendite
StructureFoliation Follows Folds, Strikes N 20 Degrres-45 Degrees W, Dips Steeply Ne. Faults Strike Nw
Tectonic settingTracy Arm Terrane
Economic & production
Development statusProspect
Discovery year1958
Identification
Deposit ID10096792
MRDS IDA013331
Alternate namesAreas No. 4
RegionNA
Data scoreB
Coordinates57.77364, -133.43917
References
USGS B 1525, P. 180-85, FIG. 69, TABLE 29 (1984)USGS B 1108-E (1964)USGS OF 78-698, P. 28-29 (1978)USGS MF-425, LOC. 5 (1972)BAG-B-1525-FIG-69-4K235USGS B 1525, P. 185