Mine detail: Great Northern Mine

Previously called 'Empire CanyonMercury MineJ.N.P. Mining CompanyMorgan Brothers MineHerzog-MorganMinnehaha'

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Location

Lat / long:

41.9165, -122.73223

Resource(M)

Primary:	Mercury
Ore:	Cinnabar, Mercury
Gangue:	Calcite, Pyrite
Orebody form:	FISSURE FILLING, VUG FILLINGS, AND DISSEMINATED IN VEINS
Discovery year:	1905

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Production years:	1929-1943
First production started:	1919

Geology

Host type:	Schist
Associated type:	Diorite
Structure:	Shear Zone
Tectonic:	Klamath Mountains

References

MRDS	M055488
DEP	10103799
Reference	{Deposit:: BAILEY, E.H., U.S. GEOLOGICAL SURVEY, PERSONAL FILES}{Deposit:: HOLMES, G.W., JR., 1965, MERCURY IN CALIFORNIA, IN MERCURY POTENTIAL OF THE UNITED STATES: U.S. BUREAU OF MINES INFORMATION CIRCULAR 8252, P. 171, 198.}{Deposit:: RANSOME, A.L., AND KELLOGG, J.L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 35, NO. 4, P. 459.}{Deposit:: LOGAN, C.A., 1925, SACRAMENTO FIELD DIVISION, SISKIYOU COUNTY, IN 21ST REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU, P. 495-496.}{Production:: USBM DATA}
Reporter	Gassaway, J. S., Peterson, Jocelyn A.