Mine detail: Bretz Mine

Previously called ''

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Location

Lat / long:

42.04544, -117.89155

Resource(M)

Primary:	Mercury
Ore:	Cinnabar
Gangue:	Calcite, Chalcedony, Pyrite
Orebody form:	IRREGULAR
Discovery year:	1917

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Past Producer
Production years:	1930-1936, 1940-1944, 1956-1961

Geology

Host type:	Sandstone
Associated type:	Rhyolite
Structure:	The Mine Is Near The North Margin Of The Mcdermitt Caldera, Normal Faults
Alteration processes:	The Host Rocks Are Argillized To Varying Degrees. Large And Small Masses Of Chalcedony Occur In Parts Of The Ore Zones

References

MRDS	M055183
DEP	10103782
Reference	{Deposit:: BAILEY, E.H., USGS, PERSONAL FILES}{Deposit:: BROOKS, H.C., 1963, QUICKSILVER IN OREGON: OREGON DEPT. OF GEOLOGY AND MINERAL INDUSTRIES, BULL. 55, 223 P.}{Deposit:: YATES, R. G., 1942, QUICKSILVER DEPOSITS OF THE OPALITE DISTRICT, MALHEUR COUNTY, OREGON AND HUMBOLDT COUNTY, NEVADA: USGS BULL. 931-N}{Deposit:: SCHUETTE, C. N., 1938, QUICKSILVER IN OREGON: ODGMI BULL. 4, P. 159-168}{Deposit:: 5) RYTUBA, J. J., 1976, GEOLOGY AND ORE DEPOSITS OF THE MCDERMITT CALDERA, OREGON-NEVADA: USGS OPEN FILE REPORT NO.}{Production:: USBM RECORDS}{Reserve-Resource:: BROOKS, H. C., ODGMI, PERSONAL FILES}
Reporter	Bergquist, Joel R., Ferns, Mark L. (Brooks, Howard C.), Gray, Jerry J., Li, Zhiping (Peters, S.)