Alaska
Occurrence

Portland Zinc-Lead-Copper-Silver-Gold Prospect

Alaska, United States
LeadCopperZincSilverGold
⌖ Show on mapUSGS source ↗
Commodities
PrimaryLead, Copper, Zinc
SecondarySilver
TertiaryGold
Commodity typeM
Deposit
Deposit sizeN
WorkingsSurface
Orebody formLENS
Materials
Ore mineralsChalcopyrite, Gold, Sphalerite
GangueMuscovite, Pyrite, Pyrrhotite, Quartz
Geology
Host rockSchist
Tectonic settingTracy Arm Terrane
Economic & production
Development statusOccurrence
Discovery year1889
Identification
Deposit ID10002414
MRDS IDA013334
RegionNA
Data scoreB
Coordinates57.69086, -133.3775
References
USGS B 1525, P. 187-189, FIG. 71, PLATE 1, (1984)USGS OF 78-698, P. 22 (1978)ADMM (ADGGS) GR1, P. 15, 16 (1962)BAG-B-1525-FIG-71