..., outcropping zones of elevated potassium, associated with high-rank alteration and gold-silver mineralization, can be detected by airborne radiometric methods ( Webster and Henley, 1989 ; Feebrey et al., 1998 ). The Waihi-Waitekauri region is located on the southern Coromandel peninsula of New Zealand...

...Mark P. Simpson; Jeffrey L. Mauk Abstract The Waitekauri area of the Hauraki goldfield, New Zealand, contains several adularia-sericite epithermal Au-Ag deposits and prospects. From west to east, the area contains the Sovereign, Jubilee, Scimitar, Scotia, Teutonic, and Jasper Creek deposits...

... of a large epithermal province: The Hauraki goldfield, New Zealand : Economic Geology , v. 106 , p. 921 – 943 . Morrell A.E. Locke C.A. Cassidy J. Mauk J.L. , 2011 , Geophysical characteristics of adularia-sericite epithermal gold-silver deposits in the Waihi-Waitekauri region, New...

... inclusions in adularia-sericite Au-Ag epithermal veins from the Karangahake, Martha, Favona, and Waitekauri deposits, southern Hauraki goldfield, New Zealand. Quartz veins contain colloform to crustiform bands that alternate with coarse-grained quartz and amethyst. The ore mineralization occurs only...

... in epithermal Au-Ag deposits: A case study from the Waitekauri area, New Zealand : Economic Geology , v. 106 , p. 999 – 1030 . Brathwaite R.L. Christie A.B. Skinner D.N.B. , 1989 , The Hauraki goldfield—regional setting, mineralization and recent exploration : Australasian Institute...

... [abs.] : Geological Society of New Zealand and New Zealand Geophysical Society Joint Annual Conference, Programme and Abstracts , p. 18 . Booden M.A. Mauk J.L. Simpson M.P. , 2011 , Quantifying metasomatism in epithermal Au-Ag deposits: A case study from the Waitekauri area, New...

..., Simpson et al., 2001 ; Comstock, USA, Hudson, 2003 ; Gosowong, Indonesia, Gemmell, 2007 ; Waitekauri, New Zealand, Simpson and Mauk, 2011). Hydrothermal alteration also results in a compositional change to the host rocks, with some elements variably gained (e.g., K and Rb) and lost (e.g., Na and Sr...

... “pseudomorphous” quartz of Tertiary gold-silver veins : E conomic G eology , v. 20 , p. 203 – 207 . Morrell , A.E. , Cassidy , J. , Locke , C.A. , and Mauk , J.L. , 2003 , Magnetic, gravity and radiometric surveys of the Waihi-Waitekauri region, New Zealand : Australasian Institute...

... at Waitekauri, New Zealand ( Simpson and Mauk, 2011 ). Zeolite minerals (species generally not identified) have been recorded as vein (e.g., Porgera, Papua New Guinea and Cracow, Australia; White et al., 1995 ) or low-temperature alteration minerals in some epithermal gold deposits (e.g., Comstock Lode, Nevada...

... ; Allis, 1990 ). Alteration halos over epithermal Au-Ag deposits are also detected through γ -ray surveys by Irvine and Smith (1990) , Feebrey et al. (1998) , and Morrell et al. (2011) . Radiometric data from the Waihi-Waitekauri epithermal Au-Ag deposit in New Zealand show widespread potassium...

... in epithermal Au-Ag deposits: A case study from the Waitekauri area, New Zealand . Economic Geology , 106 , 999 – 1030 , https://doi.org/10.2113/econgeo.106.6.999 Bourke , A. & Ross , P. 2015 . Portable X-ray fluorescence measurements on exploration drill-cores : comparing performance...

... , C.A. , and Mauk , J.L. , 2003 , Magnetic, gravity and radiometric surveys of the Waihi-Waitekauri region, New Zealand : Australasian Institute of Mining and Metallurgy New Zealand Branch Annual Conference, 36th, Proceedings , p. 241 – 249 . Nicholson , K.N. , Black , P.M...

...Mark P. Simpson; Jeffrey L. Mauk; Stuart F. Simmons Abstract Golden Cross, located in the Coromandel peninsula, New Zealand, is a classic example of a volcanic rock-hosted, low-sulfidation epithermal gold-silver deposit. Gold and silver ore is confined to the Empire vein system and shallow-level...

... in the Hauraki goldfield of New Zealand ( Figs. 1 , 2 ), with a total mined and unmined resource of greater than 7 Moz Au, provides such an opportunity. Fig. 1 Geological setting of the Hauraki goldfield on the Coromandel peninsula and location of the Martha Hill mine, modified after Skinner (1986...

... , Geophysical characteristics of Adularia-sericite epithermal gold-silver deposits in the Waihi-Waitekauri region, New Zealand : Economic Geology , v. 106 , p. 1031 – 1041 . Murphy , J.B. , Gutiérrez-Alonso , G. , Nance , R.D. , Fernández-Suárez , J. , Keppie , J.D. , Quesada , C...

...Jeffrey L. Mauk; Mark P. Simpson Abstract Golden Cross is a late Miocene volcanic-hosted epithermal Au-Ag deposit associated with quartz ± calcite ± adularia ± illite assemblages located in the Coromandel peninsula, New Zealand. Gold- and Ag-bearing quartz veins occur in intensely altered flows...

... characteristics of adularia-sericite epithermal gold-silver deposits in Waihi-Waitekauri region, New Zealand : Economic Geology , v. 106 , p. 1031 – 1041 . Mushayandebvu , M.F. , Van Driel , P. , Reid , A.B. , and Fairhead , J.D. , 2001 , Magnetic source parameters of two-dimensional...

... and Prospects of the Waitekauri Area, Hauraki Goldfield, New Zealand . Economic Geology , 106 , 945 – 973 , https://doi.org/10.2113/econgeo.106.6.945 Sinclair , A.J. 1974 . Selection of threshold values in geochemical data using probability graphs . Journal of Geochemical Exploration , 3...

.... 20 , p. 421 – 438 . Simpson , M.P. , and Mauk , J.L. , 2011 , Hydrothermal alteration and veins at the epithermal Au-Ag deposits and prospects of the Waitekauri area, Hauraki Goldfield, New Zealand : Economic Geology , v. 106 , p. 945 – 973 . Simpson , M.P. , Strmic...