Commodities
PrimaryZinc, Lead
SecondaryCopper
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Ore controlOsburn Fault Zone
Materials
Ore mineralsChalcopyrite, Galena, Sphalerite, Tetrahedrite
GanguePyrite, Quartz, Siderite
Geology
Host rockQuartzite · Revett Quartzite (White Quartzite);Burke Formation (Impure Quartzites And Argillites)
StructureA Major Structural Grain Trends Nw And Is Made Of Subparallel Faults And Folds. Major Fault Is The Osburn. This Fault Seems To Demarcate A Change In Folding Form With Folds To The North Showing Signs Of More Intense Structural Deformation Than Those To The South., Small Scale Generally Ne Trending, Steeply Dipping Faults Are Present
Tectonic settingBelt Basin
AlterationHydrothermal Bleaching Is Common Within A Belt Approximately 1 Mi Wide Along The North Side Of The Osburn Fault Zone. It Has Been Used As A Guide To Ore Deposits.
Economic & production
Development statusPast Producer
Identification
Deposit ID10010263
MRDS IDD003854
RegionNA
Data scoreB
Coordinates47.47987, -115.62157
References
SRC.REF: CALKINS, F. C. AND JONES, E. L. JR., 1914 : US GEOLOGICAL SURVEY BULL. 540 , P. 190WALLACE, R. E. AND HOSTERMAN, J. W., 1956 , RECONNAISSANCE GEOLOGY OF WESTERN MINERAL COUNTY MONTANA: US GEOLOGICAL SURVEY BULL. 1027-M, PP. 603 - 604 .CALKINS, F. C. AND JONES, E. L. JR., 1914 , ECONOMIC GEOLOGY OF THE REGION AROUND MULLAN, IDAHO AND SALTESE, MONTANA: US GEOLOGICAL SURVEY BULL. 540 , P. 190 .