TERRY LEACH ~ Curriculum Vitae and Publications

 

 

1985 – 2007 :        Consultant Geologist / Petrologist

 

·        Managing director of Chartered Mineral Services (CMS) NZ Ltd (1985-1995) and Terry Leach & Co. (1995-present); establishment and management of these companies of geologists and petrologists which serve the mining and mineral exploration industry.

·        Consultant for over 100 mining and mineral exploration companies operating in over 25 countries, mainly around the Pacific Rim region.

·        Consultant for the United Nations in the Philippines (1985) and Vietnam (1986) in upgrading the capabilities of the geological surveys in these two countries.

·        The development and teaching of in-house company and public training programs on alteration and mineralisation in hydrothermal ore systems. This includes an extremely successful short course on structure, alteration and mineralisation in Southwest Pacific copper-gold systems in conjunction with Dr. Greg Corbett. This course was presented over 30 times in 12 different countries.

·        Co-founder and manager of Asian Mineral Resources (AMR; 1987-1992) which carried out exploration for gold, nickel-copper-cobalt and replacement Pb-Zn-Ag deposits in northern Vietnam.

·        General manager of joint venture company established between Vietnam government organisations and AMR to carry out exploration and development of the Ban Phuc nickel-copper-cobalt deposit, Son La Province (1990-1992).

·        Contract research scientist for the Epithermal Research Unit, Geology Department, Auckland University (1991).

·        Research associate, Department of Earth Sciences, Waikato University, Hamilton, New Zealand (2001-2004).

 

1980-1985 :           Senior Geologist / Petrologist – KRTA Ltd. (Kingston Renolds Thom and Allardice)

 

·        Initiation of petrological and mineral services division.

·        Supervision of petrological division of KRTA Ltd. in Auckland (1980-1983) and  Geothermal Division PNOC (Philippine National Oil Company, 1984-1985) in Manila, Philippines.

·        Management of head office exploration activities in a number of geothermal fields in the Philippines.

·        Petrological evaluation of geothermal systems in New Zealand, Philippines, Japan and Canada.

 

1979-1980 : Junior Lecturer, Geothermal Institute, Auckland University

 

·        Establishment and running of geochemistry laboratory for the analyses of geothermal fluids.

·        Teaching of analytical techniques and interpretation of geochemistry of geothermal systems.

 

1978 : Research Assistant, Geology Department, Auckland University

 

·        Research in the geochemistry and alteration of reef carbonates on Funafuti Atoll, Gilbert Islands, Kiribati.

 

1974-1978 : Contract Field Geologist

 

·        For New Zealand Cement (1978) – Junior geologist in the exploration and evaluation for raw materials for a proposed cement plant, Otago, New Zealand.

·        For AHI Minerals (1976-1977) – Exploration geologist for porphyry molybdenum and fluorite deposits associated with granite intrusions, Westland, New Zealand.

·        For US Steel (1975) – Junior exploration geologist for placer gold deposits, Central Otago, New Zealand.

 

 PUBLICATIONS

 

·        Book : Mitchell, A.H.G. and Leach T.M. (1991) Epithermal Gold in the Philippines : Island Arc Metalogenesis, Geothermal Systems and Geology. Academic Press Geology Series pg. 457.

 

·        Special Publication : Corbett, G.J. and Leach, T.M. (1998) Southwest Pacific Gold-Copper Systems : Structure, Alteration and Mineralisation. Special Publication Number 6, Society of Economic Geologists, pg. 236.

 

·        Publications in Journals and Conference Proceedings

 

Bainbridge, A.L., Corbett, G.J. and Leach, T.M. (1993) The Nena high sulphidation epithermal Cu/Au system, Frieda River Copper, Papua New Guinea.  : The application to new ideas. In Second national meeting, Specialist Group in Economic Geology, Armidale, N.S.W., abstracts: Geological Society of Australia, Abstracts, v.34, pgs. 3-4

 

Bainbridge, A.L., Corbett, G.J. and Leach, T.M. (1994) The Nena high sulphidation system, Frieda River Copper, Papua New Guinea. In Ed. R. Rogerson.  Geology, Exploration and Mining Conference Proceedings. AusIMM pgs. 131-137.

 

Corbett, G.J., Leach, T.M., Shatwell, D.O. and Hayward, S.B. (1994a)  Gold mineralisation Woodlark Island, Papua New Guinea, in Rogerson, R. ed, Geology, exploration and mining conference, June 1994, Lae, Papua New Guinea, Proceedings: Parkville AusIMM pgs. 92-100.

 

Corbett, G.J., Leach, T.M., Thirnbeck, M., Mori, W., Sione, T., Harry, K. Digan, K., and Petrie, P (1994b) The geology or porphyry-related mesothermal vein gold mineralisation north of Kainantu, Papua New Guinea, in Rogerson, R. ed, Geology, exploration and mining conference, June 1994, Lae, Papua New Guinea, Proceedings: Parkville AusIMM pgs. 113-124.

 

Corbett, G.J., Semple, D. and Leach, T.M. (1994c) The Tolokuma Au/Ag vein system, Papua New Guinea. in Rogerson, R. ed, Geology, exploration and mining conference, June 1994, Lae, Papua New Guinea, Proceedings: Parkville AusIMM pgs. 230-238.

 

Corbett, G.J., Leach, T.M., Stewart, R. and Fulton, B. (1995) The Porgera gold deposit : Structure, alteration and mineralisation, in Pacific Rim Congress ’95, 19-22 November 1995, Auckland, New Zealand, Proceedings : Carlton South, AusIMM, pgs. 151-156.

 

Degeling, P., Corbett, G.J. and Leach, T.M. (1995) The Peak Hill high sulphidation gold deposit, N.S.W. in Pacific Rim Congress ’95, 19-22 November 1995, Auckland, New Zealand, Proceedings : Carlton South, AusIMM, pgs. 175-180.

 

Denwar, K.P., Leach, T.M. and Mowat, B.A. (1995) Mineralisation of the Morobe Province, Papua New Guinea, in Pacific Rim Congress ’95, 19-22 November 1995, Auckland, New Zealand, Proceedings : Carlton South, AusIMM, pgs. 181-186.

 

Grieve, P., Corbett, G.J., and Leach, T.M. (1997) A conceptual model for gold-silver mineralisation at Puhipuhi, Northland, New Zealand : 1997 New Zealand Minerals and Mining Conference Proceedings, Auckland, Publicity Unit, Crown Minerals, Ministry of Commerce, pgs. 133-139.

 

Elliot, J., Leach, T.M., Pringle, I. (2004) Hydrothermal alteration at the Bowdens Silver Deposit. PacRim ’04 Congress, 19-22 September, 2004, Adelaide, Proceedings, Carlton South, AusIMM, pgs. 303-306.

 

Erceg, M., Kaiqiang, F., and Leach, T.M. (2004). The Jianchaling Mine, Shaanxi Province, People’s Republic of China : A Carlin-type gold deposit? PacRim ’04 Congress, 19-22 September, Adelaide, Proceedings, Carlton South, AusIMM, pgs.143-152.

 

Lawless, J.V., Bromley, C.J., Leach T.M., Licup, A.C., Cope, D.M. and Recio, C.M. (1983) Bacon-Manito Geothermal Field : A geoscientific exploration model. Proc 5th N.Z. Geothermal Workshop, Auckland, pgs. 97-102.

 

Leach, T.M. (1999) Evolution of selected porphyry copper-gold systems in the Southwest Pacific region and its relevance to exploration. In PacRim ’99, 10-13 Oct 199, Bali, Indonesia, Proceedings, Carlton South, AusIMM, pgs. 211-225.

 

Leach, T.M. (2002) Alteration and mineralisation in the Busang Gold Prospect, East Kalimantan, Indonesia. In 150 Years of Mining. The AusIMM 2002 Annual Conference, 1-4 September, Auckland, Proceedings, Carlton, AusIMM, pgs. 233-238.

 

Leach, T.M., (2004) Distribution of alteration and mineralisation in Northern Carlin Trend Deposits, Nevada. PacRim ’04 Congress, 19-22 September, 2004, Adelaide, Proceedings, Carlton South, AusIMM, pgs. 153-160.

 

Leach T.M. and Bogie, I. (1982) Overprinting of hydrothermal regimes in the Palimpinon Geothermal Field, S. Negros, Philippines. In  Proceedings Pacific Geothermal Conference, pgs. 179-184.

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Leach T.M., Wood, C.P. and Reyes, A.G. (1983) Hydrothermal alteration of the Tongonan Geothermal Field, Leyte, Philippines. In Proceedings 4th International Symposium on Water-Rock Reactions, Misima, Japan, pgs. 275-278.

 

Leach, T.M. and Weigel, D.A. (1984) An evaluation of reflected light microscopy for Philippine geothermal prospecting. In 6th PNOC-EDC Workshop, 1984, Manila, Proceedings : Manila, PNOC-EDC Geothermal Division.

 

Leach, T.M., Umali, D.V. and del Rosario, R.C. (1985) Epithermal mineral zonations in active island arc : the Bacon-Manito geothermal system,  Philippines. In 7th New Zealand Geothermal Workshop, Auckland, pgs. 39-44.

 

Leach, T.M. and Muchemi, G.G. (1987) Geology and hydrothermal alteration of the north and west exploration wells in the Olkaria Geothermal Field, Kenya. In 9th New Zealand geothermal workshop, 1987, Auckland, New Zealand, Proceedings, Auckland University Geothermal Institute, pgs. 187-192.

 

Leach, T.M. and Erceg, M.M. (1990) The Wafi River high sulphur epithermal gold deposit, Papua New Guinea. In Proceedings Pacific Rim Congress 90 AusIMM, Victoria, pgs. 451-456.

 

Leach, T.M. and Corbett, G.J. (1993). Porphyry-related carbonate-base metal gold systems : The transition between the epithermal and porphyry environments. In Second National Meeting Specialist Group in Economic Geology, Armidale, N.S.W. abstracts : Geological Society of Australia Abstracts, v.34, pgs. 39-40.

 

Leach, T.M. and Corbett, G.J. (1994) Porphyry-related carbonate-base metal gold systems : Characteristics. In Rogerson, R. ed. Geology, exploration and mining conference, June 1994, Lae, Papua New Guinea, proceedings : Parkville, AusIMM, pgs. 84-91.

 

Leach, T.M. and Corbett, G.J. (1995) Characteristics of low sulphidation gold-copper systems in the Southwest Pacific. In Pacific Rim Congress 95, 19-22 November 1995, Auckland, New Zealand Proceedings, Carlton South, AusIMM, pgs. 327-332.

 

Leach, T.M., Corbett, G.J., Magner P. and MacKenzie, M. (1997) A geological model for gold mineralisation at Reefton, New Zealand, 1997 New Zealand Minerals & Mining Conference Proceedings, Auckland, Publicity Unit, Crown Minerals, Ministry of Commerce, pgs. 159-166.

 

Semple, D.G., Corbett, G.J. and Leach, T.M. (1995) The Tolokuma gold-silver vein system, Papua New Guinea, in Pacific Rim Congress 95, 19-22 November 1995, Auckland, New Zealand Proceedings, Carlton South, AusIMM, pgs. 509-514.

 

Semple, D.G., Corbett, G.J. and Leach, T.M. (1998) Tolukuma gold-silver deposit. In  Berkman, D.A. and MacKenzie, D.H. eds., Geology of Australian and Papua New Guinean Mineral Deposits, Monograph 22, AusIMM, Carlton, Victoria, pgs. 837-842.

 

van Leeuwen, T.M., Leach, T.M. Hawke, M.M. and Hawke, A.A., 1990. The Kelian disseminated gold deposit, East Kalimantan, Indonesia. In Hedenquist, J.W., White, N.C. and Siddley, N. eds. Epithermal gold mineralisation in the Circum Pacific. Journal of Geochemical Exploration, v. 35, pgs. 1-61.