Commodities
PrimaryGold
SecondarySilver
TertiaryZinc, Lead, Copper
Commodity typeM
Deposit
Deposit sizeS
WorkingsSurface/Underground
Materials
Ore mineralsChalcopyrite, Galena, Sphalerite
GangueAnkerite, Calcite, Malachite, Pyrite, Quartz
Geology
Host rockDiorite · Berners Formation; Interstratified Slate And Graywacke With Volcanic Unit Of Augite Melaphyres And Pyroclastics
Associated rockDiorite · Jualin Diorite; Massive Altered Diorite, Mainly Plagioclase, Hornblende And Biotite With Minor Epidote, Chlorite, Calcite, Sericite And Magnetite;Coast Range Batholith; Quartz Diorite Gneiss
StructureRegional Attitude Of Planar Features; Including Bedding, Foliation In Gneiss, Major Contacts, Etc.; Is N 40 W, 60 To 90 Ne
AlterationDiorite Pervasively Chloritized, Local Sericite And Epidote
Economic & production
Development statusProducer
First production1896
Last production1917
Discovery year1895
Identification
Deposit ID10107522
MRDS IDA012016
RegionNA
Data scoreB
Coordinates58.84114, -135.04706
References
USGS BULL 284, P. 33-34USGS BULL 446, P. 44-47USGS BULL 662, P. 81-82USGS BULL 714, P. 107-108METZ, PAUL A. AND WIEBMER, JOHN D., 1977, MINERAL INDUSTRY RESEARCH LABORATORY SUMMARY FILE REPORT, EUREKA, KENSINGTON, COMET, JOHNSON AND JUALIN MINES, BERNER'S BAY, JUNEAU DISTRICT, ALASKA: UNPUBLISHED REPORT SUBMITTED TO U.S.B.M. ALASKA FIELD OPERATIONS CENTER, JUNEAU, AKUSGS BULL 755, P. 24-25USGS BULL 1246, P. 159-160USGS OFR 84-572, P. 159, NO. 24ADGGS SR 38, P. 13USGS OFR 85-717, NO. J102BAG-OFR-85-717-102METZ AND WIEBMER, 1977 UNPUB. REPORT; USGS BULL 755, P. 25; USGS OFR 84-572, P. 159, NO. 24