Mine detail: Fort Baker Mine

Previously called 'Porter Ranch Depositprospect'

<< Back to the map

Location

Lat / long: 40.59424, -123.75783

Resource(M)

Tertiary: Manganese
Other material: Chert, Psilomelane, Pyrolusite
Discovery year: 1917

Production

Operation type: Surface
Development status: Past Producer
First production started: 1918

Geology

References

MAS60230005
DEP10163612
Reference{Deposit:: TRASK-GEO DESCRIPT MN DEPS OF CAL-CAL DIV MINES BUL 152-APRI}{Deposit:: JENKINS-MN IN CALIF-CAL DIV OF MINES BUL.125-DEC 1943}{Deposit:: TRENGOVE-RECON OF CAL MN DEPS-USBM-RPT OF INVEST 5579-1960}{Deposit:: BRADLEY-MN & CR IN CALIF-CAL DIV OF MINES BUL.76-1918}{Deposit:: LAIZURE-RPT XXI OF STATE MINERALOGIST-MINING IN CA-HUMBOLDT}{Deposit:: DAVIS, E.F. &WOODFORD, A.O.-UNPUBRPT CAL STATE COUNCIL FOR D}
ReporterNiemi