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Bonnifield mining district

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Journal Article
Journal: Economic Geology
Published: 01 November 2012
Economic Geology (2012) 107 (7): 1403–1432.
...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...
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First thumbnail for: Peralkaline- and Calc-Alkaline-Hosted Volcanogenic...
Second thumbnail for: Peralkaline- and Calc-Alkaline-Hosted Volcanogenic...
Third thumbnail for: Peralkaline- and Calc-Alkaline-Hosted Volcanogenic...
Journal Article
Published: 19 December 2023
Canadian Journal of Earth Sciences (2024) 61 (4): 471–504.
...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...
FIGURES
First thumbnail for: Sulphide petrology and ore genesis of the stratabo...
Second thumbnail for: Sulphide petrology and ore genesis of the stratabo...
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Generalized geologic map of Wood River area, northeastern Healy quadrangle, showing location of main volcanogenic massive sulfide deposits of Bonnifield mining district and U–Pb zircon dates on igneous rocks. Geology modified from Wahrhaftig (1968, 1970a) and Gilbert and Bundtzen (1979). Published sensitive high-resolution ion microprobe U–Pb crystallization dates from Dusel-Bacon et al. (2004, 2006, 2012), except date shown with an asterisk that is a high-resolution chemical abrasion-isotope dilution-thermal ionization mass spectrometry date from Slack et al. (2019).
Published: 19 December 2023
Fig. 2. Generalized geologic map of Wood River area, northeastern Healy quadrangle, showing location of main volcanogenic massive sulfide deposits of Bonnifield mining district and U–Pb zircon dates on igneous rocks. Geology modified from Wahrhaftig (1968 , 1970 a ) and Gilbert and Bundtzen
Image
Paleozoic tectonic assemblages of the northern Cordillera showing locations of Sheep Creek prospect (black star), main volcanogenic (VMS) deposits (red stars), and clastic-dominated (CD) deposits, prospects, and showings (yellow stars) (modified from Nelson et al. 2006; Dusel-Bacon et al. 2006). Abbreviations of occurrences discussed in the text: bn, Bonnifield mining district; dd, Delta mining district; sc, Sheep Creek prospect; fr, Fortymile River showing; mp, MacMillan Pass deposit; and hp, Howards Pass deposit. Abbreviations next to black circles for cities and towns: D, Dawson; E, Eagle; Fb, Fairbanks; RR, Ross River; T, Tok; Wh, Whitehorse; WL, Watson Lake. Other abbreviations: AK, Alaska; B.C., British Columbia; NWT, Northwest Territories; pNA, parautochthonous North America; YK, Yukon; YT, Yukon–Tanana terrane. Zigzag line represents transition between North American platformal and basinal facies, from Leighton et al. (2021) as modified from Goodfellow (2007).
Published: 19 December 2023
 al. 2006 ). Abbreviations of occurrences discussed in the text: bn, Bonnifield mining district; dd, Delta mining district; sc, Sheep Creek prospect; fr, Fortymile River showing; mp, MacMillan Pass deposit; and hp, Howards Pass deposit. Abbreviations next to black circles for cities and towns: D
Image
Figure 1. Simplified terrane and tectonic assemblage map of northern Canadian and Alaskan Cordillera (modified from Hansen et al., 1991, and Dusel-Bacon and Cooper, 1999); data sources listed in those papers). Abbreviations in terrane map: Towns: Ds—Dawson; Fb—Fairbanks; Rr—Ross River; Sk—Skagway; Wh—Whitehorse. Terranes: Ca—Cassiar; Cc—Cache Creek; Do—Dorsey; Ns—Nisling; Qs—Quesnellia; St—Stikinia; TSZ—Teslin suture zone. Unlabeled area surrounding Fairbanks is alluvium of the Tanana River valley, and unlabeled area adjacent to northern side of Denali fault in Alaska comprises various terranes not discussed in this paper. Tertiary granitoids not shown. The Yukon-Tanana Upland physiographic province in Alaska includes all the area north of the Tanana River valley; rocks south of the Tanana River are in the Alaska Range. Units included in the broadly defined “Yukon-Tanana terrane” are the Chatanika assemblage (terminology of Hansen and Dusel-Bacon, 1998; equivalent to “ec” unit of Foster et al., 1994), the Fortymile River assemblage of Dusel-Bacon et al. (2002), the Nisutlin assemblage of Hansen and Dusel-Bacon (1998), and the orthogneiss assemblage of Hansen and Dusel-Bacon (1998). 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.
Published: 01 July 2004
) . 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.
Journal Article
Journal: GSA Bulletin
Published: 01 July 2004
GSA Bulletin (2004) 116 (7-8): 989–1015.
...) . 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. ...
FIGURES
First thumbnail for: U-Pb zircon and geochemical evidence for bimodal m...
Second thumbnail for: U-Pb zircon and geochemical evidence for bimodal m...
Third thumbnail for: U-Pb zircon and geochemical evidence for bimodal m...
Journal Article
Published: 01 August 2007
Geochemistry: Exploration, Environment, Analysis (2007) 7 (3): 207–223.
... 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...
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First thumbnail for: Environmental geochemistry at Red Mountain, an unm...
Second thumbnail for: Environmental geochemistry at Red Mountain, an unm...
Third thumbnail for: Environmental geochemistry at Red Mountain, an unm...
Journal Article
Published: 01 May 2010
Geochemistry: Exploration, Environment, Analysis (2010) 10 (2): 119–136.
... (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...
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First thumbnail for: An overview of petrochemistry in the regional expl...
Second thumbnail for: An overview of petrochemistry in the regional expl...
Third thumbnail for: An overview of petrochemistry in the regional expl...
Journal Article
Journal: AAPG Bulletin
Published: 01 October 1954
AAPG Bulletin (1954) 38 (10): 2222–2225.
..., 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...
Journal Article
Journal: Geology
Published: 30 August 2021
Geology (2021) 49 (12): 1473–1477.
... 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...
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First thumbnail for: Early Pleistocene climate-induced erosion of the A...
Second thumbnail for: Early Pleistocene climate-induced erosion of the A...
Third thumbnail for: Early Pleistocene climate-induced erosion of the A...
Journal Article
Journal: Geology
Published: 29 March 2023
Geology (2023) 51 (6): 527–531.
... 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...
FIGURES
First thumbnail for: Rapid active thrust faulting at the northern Alask...
Second thumbnail for: Rapid active thrust faulting at the northern Alask...
Third thumbnail for: Rapid active thrust faulting at the northern Alask...
Journal Article
Journal: SEG Discovery
Published: 01 July 1998
SEG Discovery (1998) (34): 1–52.
... ' . ' . 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...
Journal Article
Journal: SEG Discovery
Published: 01 April 1998
SEG Discovery (1998) (33): 1–56.
...% 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...
Journal Article
Published: 01 September 2023
American Mineralogist (2023) 108 (9): 1794–1804.
... 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...
FIGURES
First thumbnail for: A rare sekaninaite occurrence in the Nenana Coal B...
Second thumbnail for: A rare sekaninaite occurrence in the Nenana Coal B...
Third thumbnail for: A rare sekaninaite occurrence in the Nenana Coal B...
Journal Article
Journal: Economic Geology
Published: 01 August 2007
Economic Geology (2007) 102 (5): 1013–1020.
... 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...
Journal Article
Journal: SEG Discovery
Published: 01 October 1999
SEG Discovery (1999) (39): 1–48.
... 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...
Journal Article
Journal: Economic Geology
Published: 01 June 2024
Economic Geology (2024) 119 (4): 907–934.
...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...
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First thumbnail for: Ore Remobilization History of the Metamorphosed Rä...
Second thumbnail for: Ore Remobilization History of the Metamorphosed Rä...
Third thumbnail for: Ore Remobilization History of the Metamorphosed Rä...
Journal Article
Journal: SEG Discovery
Published: 01 October 1997
SEG Discovery (1997) (31): 1–52.
... 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...
Journal Article
Journal: Geosphere
Published: 01 February 2012
Geosphere (2012) 8 (1): 196–205.
... 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...
FIGURES
First thumbnail for: The Quaternary thrust system of the northern Alask...
Second thumbnail for: The Quaternary thrust system of the northern Alask...
Third thumbnail for: The Quaternary thrust system of the northern Alask...
Journal Article
Journal: SEG Discovery
Published: 01 January 2000
SEG Discovery (2000) (40): 1–48.
... 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...