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Publications

  • Epithermal Au-Ag and related deposits of the Hauraki Goldfield, Coromandel Volcanic Zone, New Zealand

    Authors
    Stuart F. Simmons, J.L. Mauk, A.B. Christie, M.P. Simpson, R.L. Brathwaite
    Journal
    Economic Geology
    Year
    2007
    Epithermal Au-Ag vein deposits of the Hauraki goldfield in the Coromandel volcanic zone, New Zealand, produced 320,000 kg Au and 1.5 million kg Ag between 1862 and 2006 from a total land area of appro... REGISTER NOW TO SEE MORE

  • Whole-rock geochemical techniques for evaluating hydrothermal alteration, mass changes, and compositional gradients associated with epithermal Au-Ag mineralization

    Authors
    Stuart F. Simmons, J.L. Mauk, I. Warren
    Journal
    Economic Geology
    Year
    2007
    Volcanic rocks hosting quartz ± calcite ± adularia ± illite epithermal deposits undergo elemental mass changes associated with K metasomatism, K-H metasomatism, and H metasomatism that are developed p... REGISTER NOW TO SEE MORE

  • Southern Alps Cu-Au hydrothermal system, Westland, New Zealand

    Authors
    Dave Craw, R.D. Johnstone, M.S. Rattenbury
    Journal
    Mineralium Deposita
    Year
    1990
    The Southern Alps of New Zealand is an actively rising mountain belt which displays a thermal anomaly adjacent to the Alpine Fault, the Australian-Pacific plate boundary. Extensive fluid movement occu... REGISTER NOW TO SEE MORE

  • Origin and deposition of a graphitic schist-hosted metamorphogenic Au-W deposit, Macraes, East Otago, New Zealand

    Authors
    Dave Craw, R.J. Norris, S.A. McKeag
    Journal
    Mineralium Deposita
    Year
    1989
    The Macraes gold-tungsten deposit occurs in a low-angle thrust system in biotite grade Otago Schist. Native gold, scheelite, pyrite and arsenopyrite are found in and adjacent to quartz veins and silic... REGISTER NOW TO SEE MORE