Commodities
PrimarySilver, Gold
SecondaryCopper
Commodity typeM
Deposit
Deposit sizeY
WorkingsUnderground
Orebody formTABULAR, LENTICULAR
Ore controlTension Fractures Presumed To Be Caused By Overthrusts
Materials
Ore mineralsAnkerite, Chalcopyrite, Chrysocolla, Malachite, Quartz
Geology
Host rockArgillite · Spokane Formation, Thin-Bedded Green Argillite
StructureEl Dorado - Lombard Overthrust Boulder Batholith, Broad Northwest-Trending Anticline
Tectonic settingCordilleran Miogeosyncline - Foreland
Economic & production
Development statusPast Producer
First production1902
Discovery year1900
Identification
Deposit ID10105719
MRDS IDW014692
Alternate namesEclipse - Argo
RegionNA
Data scoreB
Coordinates46.6874, -111.58254
References
LAWSON, D. C., 1975, DIRECTORY OF MINING ENTERPRISES FOR 1974: MONT. BUREAU OF MINES GEOL. BULL. 95REED, G. C., 1951, MINES AND MINERAL DEPOSITS (EXCEPT FUELS), BROADWATER COUNTY, MONTANA: U.S. BUREAU OF MINES INF. CIRC. 7592USBM IC 7592