Mine detail: East Mayacmas District Report

Previously called ''

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Location

Lat / long:

38.19989, -122.30105

Resource(M)

Primary:	Mercury
Secondary:	Chromium
Tertiary:	Manganese, Copper
Discovery year:	1850

Production

Operation type:	Unknown
Deposit type:	DISSEMINATED, VEINS, STOCKWORKS
Production size:	Medium
Development status:	Producer
First production started:	1864

Geology

Structure:	LOCAL FAULTS TRENDING NW, LITHOLOGIC CONTACTS, NW TRENDING ANTICLINE (MAYACMAS ANTICLINE)
Alteration processes:	KAOLINIZATION SEDIMENTS, SILICA CARBONATE ALTERATION OF SERPENTINE

References

MRDS	M055652
DEP	60000983
Reference	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