Mine detail: Bonanza Mine

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Location: Douglas County, Oregon, United States, North America
Lat / long: 43.39425, -123.18366
dep_id: 10040416
mrds_id: M055187
Commodity type: metallic
Major mineral: Mercury
Operation type: Unknown
Production size: Medium ammount of material produced
Development status: Past Producer
ore: Cinnabar, Mercury, Metacinnabar
gangue: Calcite, Chalcedony, Marcasite, Pyrite, Quartz, Siderite
orebody_fm: IRREGULAR LENSES
work_type: Unknown
alteration: Silica, Carbonate And Clay Alteration And Impregnation Of Host Rocks
conc_proc: Open-Space Fillings By Hydrothermal Fluids
ore_ctrl: Bedding Plane Shear Zone In Sandstone. Ore Zone In Upper Levels Of The Mine Is Capped By Shale Unit
Reporter: Bergquist, Joel R., Ferns, Mark L. (Brooks, Howard C.), Gray, Jerry J.
hrock_unit: Umpqua;Umpqua;Umpqua
hrock_type: Siltstone,Sandstone
Structure: Ore Zone Is On The East Flank Of A Broad Anticline Striking N 25 E And Dipping 45 Se, Sandstone-Shale Contact
Year first produced: 1937
yr_lst_prd: 1960
disc_yr: 1868
prod_yrs: 1887 , 1937 - 1949 , 1951 - 1960
References:
  • Deposit:: SCHUTTE, C. N., 1938, QUICKSILVER IN OREGON: ODGMI BULL. 4, P. 130-137
  • 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. 955 - F.
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