California · Amador County
Producer

Big Gulch

Amador County, California, United States
GoldManganese
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold
TertiaryManganese
Commodity typeM
Deposit
Deposit typeResidual
Deposit sizeS
Materials
Ore mineralsPsilomelane
Geology
Host rockAndesite
Associated rockAndesite
Economic & production
Development statusProducer
Discovery year1940
Identification
Deposit ID10028301
MRDS IDM005201
RegionNA
Data scoreC
Coordinates38.49101, -120.66462
References
CALIF. JOUR. MINES & GEOL. V. 50, NO. 1, JAN. 1954, P. 268DOM BULL. 152, P. 27