Mine detail: Portland Mine

Previously called 'NBMG Sample Site 2821.'

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Location

Lat / long: 40.43072, -118.79043

Resource(M)

Primary: Gold, Silver
Tertiary: Lead, Zinc
Ore: Gold

Production

Operation type: Unknown
Deposit type: Magmatic, Breccia-Filling
Production size: Small
Development status: Past Producer

Geology

Host type:Rhyolite
Associated type:Rhyolite

References

MRDSM060228
DEP10103880
Reference{Deposit:: QUADE, J., 1984, NBMG FIELD EXAMINATION REPORT AND SAMPLE ANALYSIS: UNPUBLISHED NBMG (TINGLEY) FILES.}{Deposit:: JOHNSON, M. G., 1977, GEOLOGY AND MINERAL DEPOSITS OF PERSHING COUNTY, NEVADA: NBMG BULL. 89, P. 88.}{Deposit:: SHAMBERGER, M. A., 1972, THE STORY OF SEVEN TROUGHS, PERSHING COUNTY, NEVADA - HISTORIC MINING CAMPS OF NEVADA, NO. 3: USGS AND NEVADA DEPARTMENT OF CONSERVATION AND NATURAL RESOURCES, NEVADA HISTORICAL PRESS, CARSON CITY.}
ReporterLa Pointe, D.D. (Tingley, J.V.), Phinisey, J. D. (Marcus, S.), Humphries, S. E. (Marcus, S.), Johnson, Maureen G., Li, Zhiping (Peters, S.)