Publications
Publications
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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...
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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...
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Sources of metals and fluids in orogenic gold deposits: Insights from the Otago and Alpine schists, New Zealand
- Authors
- Dave Craw, I.K. Pitcairn, D.A.H. Teagle, G.R. Olivo, R. Kerrich, T.S. Brewer
- Journal
- Economic Geology
- Year
- 2006
- The Otago and Alpine schists of the South Island of New Zealand form a young (lt;200 Ma), lithologically monotonous, metasedimentary belt with exposures ranging from unmetamorphosed graywackes to amph...
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Comparison of arsenic and trace metal contents of discharges from adjacent coal and gold mines, Reefton, New Zealand
- Authors
- Dave Craw, A. Black, L. Hewlett
- Journal
- Marine and Freshwater Research
- Year
- 2005
- Historic gold and coal mines in the same catchment near Reefton, New Zealand allow comparison of environmental effects of the different mines in the same climate and topography. Gold mine discharge wa...
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