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Tintina Gold Province - Tombstone Gold Province (Alaska - USA and Yukon - Canada)

Canada

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The Tintina Gold Province extends over a large tract of Alaska (USA) and the Yukon Territory of north-western Canada and includes such large deposits as Forth Knox, Pogo, Kensington, True North in Alsaka and Dublin Gulch in Canada.

The Tintina Gold Province cuts across a broad range of lithologies (eg in Alaska the country rocks are the complex metamorphics of the Yukon Tanana terrane, while in the Yukon the gold belt traverses sediments the Selwyn Basin.   However in both regions the mineralisation is found either within the granites and/or their hornfelsed aureoles several kilometres from the exposed stocks.   Mineralisation commonly occurs as steeply dipping sheeted auriferous quartz lodes within the Cretaceous intrusives or accompanying hornfelsed sediments, as well as disseminated ores, replacements, skarns or individual quartz veins.   These deposits differ from porphyry deposits, but have some similarities with orogenic gold deposits.   They have a low sulphide abundance, are anomalous in As, Sb, Bi, Te and W and have restricted alteration zones, but have a close spatial relationship with intrusives.

On the eastern margin of the Tintina Gold Province, there is a suite of mid Cretaceous intrusives, the Tombstone Plutonic Suite, with which a series of gold occurrences (including Dublin Gulch and the Clear Creek occurrences) appear to be associated.   This forms the more localised Tombstone Gold Belt.   This belt forms the eastern margin of the Tintina Gold Province.

For detail consult the refernce(s) listed below - as well as the Fort Knox and related records.

The most recent source geological information used to prepare this summary was dated: 2003.    
This description is a summary from published sources, the chief of which are listed below.
© Copyright Porter GeoConsultancy Pty Ltd.   Unauthorised copying, reproduction, storage or dissemination prohibited.


  References & Additional Information
   Selected References:
Baker T and Lang J R  2001 - Fluid inclusion characteristics of intrusion-related gold mineralization, Tombstone-Tungsten magmatic belt, Yukon Territory, Canada: in    Mineralium Deposita   v36 pp 563-582
Mair J L, Goldfarb R J, Johnson C A, Hart C J R and Marsh E E,  2006 - Geochemical Constraints on the Genesis of the Scheelite Dome Intrusion-Related Gold Deposit, Tombstone Gold Belt, Yukon, Canada: in    Econ. Geol.   v101 pp 523-553
Maloof T L, Baker T and Thompson J F  2001 - The Dublin Gulch intrusion-hosted gold deposit, Tombstone plutonic suite, Yukon Territory, Canada: in    Mineralium Deposita   v36 pp583-593
Marsh E E, Goldfarb R J, Hart C J R, Johnson C A  2003 - Geology and geochemistry of the Clear Creek intrusion-related gold occurrences, Tintina Gold Province, Yukon, Canada: in    Can. J. Earth Sci.   v40 pp 681-699
Mueller S H, Goldfarb R J, Hart C J R, Mair J L, Marsh E E and Rombach C S,  2004 - The Tintina Gold Province, Alaska and Yukon - new world-class gold resources and their sustainable development: in   Hi Tech and World Competitive Mineral Success Stories Around the Pacific Rim Proc. Pacrim 2004 Conference, Adelaide, 19-22 September, 2004, AusIMM, Melbourne,    pp 189-198
Selby D, Creaser R A, Heaman L M, Hart C J R  2003 - Re-Os and U-Pb geochronology of the Clear Creek, Dublin Gulch, and Mactung deposits, Tombstone Gold Belt, Yukon, Canada: absolute timing relationships between plutonism and mineralization: in    Can. J. Earth Sci.   v40 pp 1839-1852
Stephens J R, Mair J L, Oliver N H S, Hart C J R, Baker T,  2004 - Structural and mechanical controls on intrusion-related deposits of the Tombstone Gold Belt, Yukon, Canada, with comparisons to other vein-hosted ore-deposit types: in    J. of Structural Geology   v26 Pp 1025-1041


Porter GeoConsultancy Pty Ltd (PorterGeo) provides access to this database at no charge.   It is largely based on scientific papers and reports in the public domain, and was current when the sources consulted were published.   While PorterGeo endeavour to ensure the information was accurate at the time of compilation and subsequent updating, PorterGeo takes no responsibility what-so-ever for inaccurate or out of date data, information or interpretations.

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