Commodities
PrimaryGold, Silver
SecondaryLead
TertiaryArsenic
Commodity typeM
Deposit
Deposit sizeM
WorkingsSurface
Orebody formTABULAR, LENTICULAR
Ore controlIntersections Of Chichagof Fault And Splays, Also Warp In Chichagof Fault. Galena Indicative Of Good Ore
Materials
Ore mineralsGalena, Gold
GangueCalcite, Pyrite, Quartz
Geology
Host rockSiltstone · Sitka Graywacke;Sitka Graywacke
StructureSitka Fault Zone Is A Major Regional Feature, Chichagof Fault Localizes Ore Shoots
Economic & production
Development statusPast Producer
First production1906
Last production1943
Discovery year1905
Identification
Deposit ID10000499
MRDS IDA010688
Alternate namesDe Groff, Golden Gate
RegionNA
Data scoreB
Coordinates57.6636, -136.10202
References
USGS OFR 78-450, P. 28-31USGS B929, P. 78-81, 86-101ADGGS SPEC REPT 31, P. 46