Commodities
PrimarySilver, Gold, Lead
SecondaryCopper
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formTABULAR
Ore controlParallel, East-West Veins In Irregular Shear Zones Within Quartz Monzonite.
Materials
Ore mineralsAnglesite, Chalcopyrite, Galena, Pyrite
GangueQuartz
Geology
Host rockQuartz Monzonite
Associated rockGranite · Quartz Monzonite Of Mount Benedict
StructureNumerous N-W Trending Aplite Dikes; Major Fault Trending N-S.
AlterationMinor
Economic & production
Development statusProducer
First production1928
Last production1941
Identification
Deposit ID10046342
MRDS IDM241356
Alternate namesTumacacori, Silent Friend
RegionNA
Data scoreB
Coordinates31.4032, -110.92596
References
USBM-ABGMT PRODUCTION FILE DATAUSBM FILE DATA-CLUSTER #30-COLUMBIA MINE GROUPADMR FILE DATA-COLUMBIA (SILENT FRIEND) FILEUSGS BULL 582, P. 352-353USGS MAP I-762ARIZ BUR MINES BULL 191, P.60