...Cynthia Dusel-Bacon; Nora K. Foley; John F. Slack; Alan E. Koenig; Robert L. Oscarson Abstract Volcanogenic massive sulfide (VMS) Zn-Pb-Cu-Ag-Au deposits of the Bonnifield mining district formed during Late Devonian-Early Mississippian magmatism along the western edge of Laurentia. The largest...

...Cynthia Dusel-Bacon; John N. Aleinikoff; Suzanne Paradis; John F. Slack The Sheep Creek prospect is a stratabound Zn–Pb–Ag–Sn massive sulfide occurrence in the Bonnifield mining district, northern Alaska Range. The prospect is within a quartz–sericite–graphite–chlorite schist unit associated...

...) . Rectangles outline our three study areas. Locations of VMS and SEDEX deposits from Goodfellow et al. (1993) , Hunt (1997) , Newberry et al. (1997) , Schmidt (1997) , and Dusel-Bacon et al. (1998) . Dashed outline south of the Tanana River shows the boundary of the Bonnifield mining district. ...

... volcanogenic massive sulphide (VMS) deposits located in the Bonnifield mining district, Alaska, include a detailed study of the unmined Red Mountain deposit. Shown on the cover of this journal, Red Mountain is the best-exposed of the deposits, and displays a remarkable environmental footprint of natural acid...

... (Wolverine basalt) ( Piercey et al . 2002 b ); a similar situation exists at Eskay Creek ( Barrett & Sherlock 1996 ). In other cases, like Avoca and the Delta-Bonnifield districts, the deposits are associated with calc-alkalic and peralkalic rhyolites that are cross-cut and spatially associated...

..., the adjacent hills of pre-Cambrian schist. Five fossil marine pelecypods were found in 1946 and 1952 by Peter Maas, an employee of the United States Smelting, Refining and Mining Company, in early Quaternary stream gravel exposed in placer gold-mining operations, 10 miles west of Fairbanks (center of Sec...

... Bell Area, Fairbanks A-4 Quadrangle, Bonnifield Mining District, Alaska : Alaska Division of Geological & Geophysical Surveys Report of Investigation RI2006-2 , v. 1.0.1 , 98 p., 1 sheet, scale 1:50,000 , https://doi.org/10.14509/15026 . Balco , G. , and Rovey , C.W. , 2008...

... Bell Area, Fairbanks A-4 Quadrangle, Bonnifield Mining District, Alaska : Alaska Division of Geological & Geophysical Surveys Report of Investigation RI2006 , v. 1.0.1 , https://doi.org/10.14509/15026 . Avouac , J.P. , 2015 , Mountain building: From earthquakes to geologic deformation...

... ' . ' . Denver, Colorado 80237 SOUTH CENTRAL 303-337-4559 Columbia Yukon Resources announced acquisition of a telephone/fax 100% interest in Liberty Bell Mining Company, whose principal asset is the Liberty Bell gold deposit in the western Bonnifield PAID ADVERTISEMENT District. The 47-square-mile property...

...% by funding the $1.7 million exploration program for 1998. The other joint venture in which Grayd now has an interest is the Bonnifield joint venture with Inmet Mining Co. This venture covers approximately 38.S square miles of the Bonnifield district 60 miles south of Fairbanks. Only one of the prospects...

... massive sulfide deposits in the Bonnifield Mining District, Northern Alaska Range . In L.P. Gough and W.C. Day , Eds ., Recent U.S. Geological Survey Studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada—Results of a 5-Year Project. U.S. Geological Survey Scientific...

... Heavy metal concentrations in shallow marine sediments affected by submarine tailings disposal and artisanal gold mining, Buyat-Ratototok district, North Sulawesi, Indonesia— Evan N. Edinger, P. Raja Siregar, and George M. Blackwood 701 Vol. 52, No. 7, 2007 Mineralogical...

... the Juneau gold the nearby Republic mining district suggesting: (1) K-2 mineralization belt in that tellurides are a significant constituent of ore. Mineral occurred at greater depth; or (2) mineralization was caused by a composition and isotopic characteristics of 18 prospects at Berners Bay different...

...Jonathan Rincon; Nils Jansson; Helen Thomas; Majka Christiane Kaiser; Mac Fjellerad Persson; Erik Nordfeldt; Christina Wanhainen Abstract The Skellefte district in northern Sweden hosts many volcanogenic massive sulfide (VMS) deposits and is considered one of the most important European mining...

... their MINING BUSINESS DIGEST PHONE (303) 798-9365 recently formed and soon to be listed Vancouver Stock Exchange 11 ROBIN CREST LANE FAX (303) 798-6654 company, Liberty Bell Mining, completed diamond drilling on the LITTLETON, CO 80123-6513 Liberty Bell Mine gold property in the Bonnifield District in early E...

... geologic map of the Liberty Bell area, Fairbanks A-4 Quadrangle, Bonnifield mining district, Alaska : Alaska Division of Geological and Geophysical Surveys, Report of Investigations 2006-2 v. 1 . 0.1, 98 p., 1 sheet, scale 1:50,000 . Bemis S.P. , 2004 , Neotectonic framework of the north...

... for "Insights." and Results." Side trips from Belo Horizonte to Ouro Preto and to the Morro Velho district Cuiba gold mine with Lydia and Franciscus were All the work put into advance publicity and the arrangements is, especially informative. Other trips, to the Amazon at Manaus and of course, what really made...