Mine detail: Heughes Fredrika

Previously called ''

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Location

Lat / long: 39.29737, -123.17165

Resource(M)

Tertiary: Manganese

Production

Operation type: Unknown
Production size: None
Development status: Prospect

Geology

References

MRDSM010042
DEP10031343
Reference{Deposit:: CALIF. V. 49, NO. 4, P. 386}{Deposit:: USBM R.I. 5579, P. 9}{Deposit:: D.O.M. BULL. 152 1950 P. 125}
ReporterGere, W., Killman, K.; Albers, J.