Description
Mathew Macnamara
Commodities
PrimarySilver
Commodity typeM
Deposit
Model150: Epithermal vein, Comstock
Deposit sizeL
Ore controlFault Control
Materials
Ore mineralsArgentite, Polybasite, Stephanite
GangueCalcite, Pyrite, Quartz
Geology
Host rockRhyolite · West End Rhyolite
StructureMacnamara Fault, Rainbow Fault
AlterationRhyolite Altered To Chlorite, Calcite, Pyrite, Quartz, Sericite,Siderite.
Economic & production
Development statusPast Producer
Discovery year1901
Identification
Deposit ID10044366
MRDS IDM231770
Alternate namesMcnamara Shaft
RegionNA
Data scoreB
Coordinates38.07022, -117.23425
References
SPURR, J.E., 1905, GEOLOGY OF THE TONOPAH MINING DISTRICT: USGS PROF. PAPER 42, P. 189-191CARPENTER, JA, ET AL, 1953, HISTORY OF FIFTY YEARS OF MINING AT TONOPAH: NBMG BULL. 51NOLAN, TB, 1935, UNDERGROUND GEOL. OF TONOPAH MINING DIST.: NBMG BULL. 23CARPENTER, ET AL, 1953, P. 149