California · Lake, Napa County
Producer

East Mayacmas District Report

Lake, Napa County, California, United States
MercuryChromiumManganeseCopper
⌖ Show on mapUSGS source ↗
Commodities
PrimaryMercury
SecondaryChromium
TertiaryManganese, Copper
Commodity typeM
Deposit
Deposit typeDISSEMINATED, VEINS, STOCKWORKS
Deposit sizeM
Ore controlMINOR LOCAL FAULTS, GOUGE ZONES, CHANGES IN ATTITUDE
Geology
StructureLOCAL FAULTS TRENDING NW, LITHOLOGIC CONTACTS, NW TRENDING ANTICLINE (MAYACMAS ANTICLINE)
AlterationKAOLINIZATION SEDIMENTS, SILICA CARBONATE ALTERATION OF SERPENTINE
Economic & production
Development statusProducer
First production1864
Discovery year1850
Identification
Deposit ID60000983
MRDS IDM055652
RegionNA
Data scoreD
Coordinates38.19989, -122.30105
References
YATES, R. G. AND HILPERT, L. S., 1946, QUICKSILVER DEPOSITS OF THE EASTERN MAYACMAS DISTRICT, LAKE AND NAPA COUNTIES, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 42 P. 231 - 286