Mine detail: Armstrong No. 2 Mine

Previously called 'Armstrong No. 3 ProspectSavage Nos.2 and 3'

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Location

Lat / long: 40.18845, -123.30501

Resource(B)

Tertiary: Calcium, Copper, Iron, Manganese, Silica
Other material: Chert, Limonite, Malachite, Psilomelane, Rhodochrosite
Discovery year: 1941

Production

Operation type: Surface-Underground
Development status: Past Producer
First production started: 1954

Geology

References

MRDSM020294
MAS61050004
DEP10216144
Reference{Deposit:: TRASK-GEO DESCRIPT MN DEPS OF CAL-CAL.DIV.OF.MINES,BUL.152-A}{Deposit:: *RIEN-MINES & MIN RES TRINITY CO-CAL.DIV.MINES,GEO.CO.RPT}
ReporterNiemi