Alaska
Occurrence

Twentieth Century Knight Island

Alaska, United States
Copper
⌖ Show on mapUSGS source ↗
Commodities
PrimaryCopper
Commodity typeM
Deposit
Deposit sizeN
Materials
Ore mineralsChalcopyrite
GanguePyrrhotite
Geology
Host rockBasalt · Orca Group
Associated rockBasalt
AlterationBasalt Is Altered To Greenstone
Economic & production
Development statusOccurrence
Identification
Deposit ID10000396
MRDS IDA010558
RegionNA
Data scoreC
Coordinates60.31484, -147.73336
References
USGS BULLETIN 379, P. 90USGS MISCELLANEOUS FIELD STUDIES 880-A, LOCATION 226USGS OPEN FILE 80-621, P. 240