Mine detail: Nonpareil Mine

Previously called 'New Idrian'

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Location

Lat / long:

43.41342, -123.16422

Resource(M)

Primary:	Mercury
Ore:	Cinnabar, Mercury
Gangue:	Calcite, Chalcedony, Limonite, Marcasite, Realgar, Siderite
Orebody form:	IRREGULAR
Discovery year:	1868

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Production years:	1870 , 1880 , 1882 , 1925 , 1932

Geology

Host rock:	Umpqua
Host type:	Sandstone
Structure:	Mines Are On The East Limb Of A Broad Anticline Striking N25e And Dipping 45se, Local Faults
Alteration processes:	Silica, Carbonate, And Clay Alteration/Impregnation Of Rocks In Fault Zone ; Supergene Limonitization Of Siderite And Marcasite

References

MRDS	M055186
DEP	10040415
Reference	{Deposit:: WELLS, F. G. AND WATERS, A. C., 1934, QUICKSILVER DEPOSITS OF SOUTHWESTERN OREGON: USGS BULL. 850}{Deposit:: BAILEY, E. H., USGS PERSONAL FILES}{Deposit:: BROOKS, H. C., 1963 , QUICKSILVER IN OREGON: ODGMI BULL 55 , 223 P.}{Deposit:: BROWN, R. E. AND WATERS, A. C., 1951 , QUICKSILVER DEPOSITS OF THE BONANZA - NONPAREIL DISTRICT, DOUGLAS COUNTY, OREGON: USGS BULL 959 - F}{Deposit:: 1944 DIREXPL USBM, EXPLORATORY DRILLING, FOUND NO OR}
Reporter	Bergquist, Joel R., Ferns, Mark L. (Brooks, Howard C.), Gray, Jerry J.