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Waihi Mine

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Journal Article
Published: 01 December 2006
South African Journal of Geology (2006) 109 (4): 611-624.
..., Jacob et al. (2000) concluded that ubiquitous U/Pb titanite ages of ~500 Ma from the Navachab Mine and surroundings in the sCZ record the recrystallization and isotopic resetting of the minerals in response to a high-temperature, but post-collisional event at that time. Similarly, Nex et al. (2001...
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Journal Article
Journal: Economic Geology
Published: 01 September 2011
Economic Geology (2011) 106 (6): 975-998.
...K. Bernard Spörli; Hugh Cargill Abstract We describe the complex structure in the highest (now mined-out) levels of the world-class Martha Hill gold-silver deposit, Coromandel peninsula, which is hosted in late Miocene andesitic rocks. A northeast-striking block of rock 360 m long and up to 100 m...
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Journal Article
Journal: Economic Geology
Published: 01 August 2007
Economic Geology (2007) 102 (5): 817-839.
...), provide new incentive for the reevaluation of historic and presently mined epithermal deposits in the Hauraki goldfield and other epithermal provinces worldwide. We thank Newmont Waihi Gold, particularly Don McKay and Lorrance Torckler, for granting access to the Favona deposit and permission...
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Journal Article
Published: 15 August 2017
Geochemistry: Exploration, Environment, Analysis (2017) 18 (2): 97-108.
... gold-silver deposits in the Hauraki Goldfield of the Coromandel Peninsula ( Fig. 1 ) ( Hollinger & Mauk 2002 ). Waihi Au-Ag mine annually produces 700 000 ounces of silver and 100 000 ounces of gold ( OceanaGold 2017 ). This paper explores a method of analysis and an application of the pXRF...
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Journal Article
Journal: Economic Geology
Published: 01 March 2002
Economic Geology (2002) 97 (2): 269-290.
... deposition. The most comprehensive early descriptions of the geology of the Waihi field are by Bell and Fraser (1912) and Morgan (1924) . Recent exploration and mining have provided new data and sample material for geological and geochemical studies of the Waihi deposit ( Brathwaite and McKay, 1989...
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Journal Article
Journal: Economic Geology
Published: 01 September 2011
Economic Geology (2011) 106 (6): 1031-1041.
... variable vegetation cover that has been shown to attenuate radiometric signals in other epithermal provinces ( Irvine and Smith, 1990 ). The most intense potassium anomalies occur at deposits exposed at the surface by mining where there is no vegetation cover (e.g., Waihi and Golden Cross); in contrast...
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Image
(a) Map showing the location of the Golden Cross deposit, <b>Waihi</b> District, N...
Published: 01 April 2001
Figure 1. (a) Map showing the location of the Golden Cross deposit, Waihi District, New Zealand (after Skinner, 1986 ). Inset shows the position of this area in the North Island of New Zealand. (b) Plan view map of the Golden Cross mine area showing the relationship between the open-pit, cross
Image
A. Crustiform quartz vein, Martha, <b>Waihi</b>. B. Platy calcite coated by quartz...
Published: 01 August 2007
F ig . 8. A. Crustiform quartz vein, Martha, Waihi. B. Platy calcite coated by quartz, Martha, Waihi. C. Boxwork bladed quartz after calcite with fine-grained euhedral quartz overgrowths, Martha, Waihi. D. Jigsaw breccia in the footwall of the Empire vein, Golden Cross. E. Quartz vein breccia
Journal Article
Journal: Economic Geology
Published: 01 December 2018
Economic Geology (2018) 113 (8): 1671-1678.
.... Results for modern Taupo volcanic zone calcites were paired with known fluid δ 18 O values and these indicate precipitation in equilibrium with produced geothermal waters. Measurements carried out at the Waihi low sulfidation deposit in New Zealand, the Antamina polymetallic skarn in Peru, and the Mount...
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Journal Article
Journal: Economic Geology
Published: 01 August 2007
Economic Geology (2007) 102 (5): 785-816.
...F ig . 8. A. Crustiform quartz vein, Martha, Waihi. B. Platy calcite coated by quartz, Martha, Waihi. C. Boxwork bladed quartz after calcite with fine-grained euhedral quartz overgrowths, Martha, Waihi. D. Jigsaw breccia in the footwall of the Empire vein, Golden Cross. E. Quartz vein breccia...
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Image
(A) Geological map and location of the Martha Hill <b>mine</b> open pit (ellipse),...
Published: 01 September 2011
Fig. 2 (A) Geological map and location of the Martha Hill mine open pit (ellipse), after Simpson and Mauk (2007) . Note the possible west-northwest–east-southeast alignment of the deposits versus the northeasterly trends of the main veins. The demagnetized zone defines the total Waihi up-flow
Journal Article
Journal: Geophysics
Published: 05 October 2010
Geophysics (2010) 75 (5): B187-B195.
.... All the processing was carried out in the UGC SAP computer center of the Indian School of Mines’ Department of Applied Geophysics in Dhanbad. The authors also thank Sri Bhrigu Shankar at the Geological Survey of India, Kolkata, for valuable discussion. Roy et al. (1985) first carried out self...
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Journal Article
Journal: Economic Geology
Published: 01 November 2017
Economic Geology (2017) 112 (7): 1807-1817.
... porphyry copper deposit has been mined in an open pit since 1982 ( Sillitoe and Gappe, 1984 ). The ore is associated with the potassic-phyllic alteration ( Portacio, 1979 ) of the Masara Formation and the intruding quartz diorite porphyry ( Mitchell and Leach, 1991 ). The Panuraon deposit is similarly...
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Journal Article
Journal: Economic Geology
Published: 01 May 2002
Economic Geology (2002) 97 (3): 481-498.
... Mining Co. and MMAJ for access to underground workings and borehole cores and for permission to publish the results from this study. In particular, we thank the geologists at the Hishikari mine for their assistance and hospitality, especially Nori Ushirone, Takashi Kuriyama, Kohji Morimoto, Ryota Sekine...
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Journal Article
Published: 11 October 2018
Geochemistry: Exploration, Environment, Analysis (2018) 19 (1): 74-90.
..., and many Au-bearing mineralized bodies (occurrences) were discovered through lots of private mining and prospecting efforts. These early mining activities subsequently promoted large-scale geological prospecting work in the late 1980s to 1990s, and several deposits have been found such as Quncun (metal...
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Journal Article
Published: 01 April 2017
Geochemical Perspectives (2017) 6 (1): 18-51.
... in the crust and used widely by industry (Section 4). The 2014 production of 22.5 Mt (18.7 Mt mined and 3.9 Mt secondary Cu; World Copper Factbook, 2016) accounts for about 16 % of the value of mined metals. Its concentration in the upper continental crust is estimated to be 28 ppm (Rudnick and Gao, 2004...
Journal Article
Journal: Economic Geology
Published: 01 January 2000
Economic Geology (2000) 95 (1): 99-112.
... in a boiling geothermal system : American Journal of Science , v. 294 , p. 361 – 400 . Simpson , C.R.J. , 1996 , The formation of banded epithermal quartz veins at the Golden Cross mine, Waihi, New Zealand : Unpublished M.Sc. thesis, Auckland , University of Auckland , 100 p. Simpson...
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Journal Article
Journal: Economic Geology
Published: 01 August 2007
Economic Geology (2007) 102 (5): 873-892.
... of the Golden Cross project, Waihi, New Zealand : Australasian Institute of Mining and Metallurgy Monograph 13 , p. 67 – 72 . Henley , R.W. , 1985 , The geothermal framework for epithermal deposits : Reviews in Economic Geology , v. 2 , p. 1 – 24 . Henley , R.W. , 1990 , Epithermal...
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Journal Article
Journal: Economic Geology
Published: 01 March 2019
Economic Geology (2019) 114 (2): 243-273.
..., except at Martha (Waihi) and Karangahake, where veins were mined over exceptional vertical intervals of 575 and 700 m, respectively ( Christie et al., 2007 ). The chemistry of the altered host rocks was determined using an Olympus Vanta pXRF instrument, with a 4-W, 8- to 50-kV, Rh X-ray tube...
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Journal Article
Journal: Economic Geology
Published: 01 August 2009
Economic Geology (2009) 104 (5): 623-633.
... that moves through convergent margin hydrothermal systems. Epithermal gold deposits that remain in the crust can supply current production from them for 1,400 to 5,000 years, depending on success of exploration and depth of mining. Finally, we are consuming gold from epithermal deposits about 17,000 times...
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