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Volcanic Stratigraphy, Structure and Controls on Mineralization, Golden Cross Mine, New Zealand.
By McOnie A. W, Rutherford PG
A volcanic sequence is described from the Golden Cross Mine, Waihi, New Zealand. The sequence includes seven lithostratigraphic units comprising flow and pyroclastic units of Coromandel Group andesit
Jan 1, 1995
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Volcanic-Associated Mineralization in the Kangiara Region, South Eastern New South Wales, Australia.
Near Kangiara in south eastern New South Wales, Australia, a number of polymetallic (copper, lead and zinc, with minor silver and gold) mineral deposits occur within a relatively broad volcanic rock b
Jan 1, 1990
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Volcanic-Sedimentary Facies Associations Hosting the Volcanogenic Massive Sulphide Mineralisation at Golden Grove, Western Australia
The Archean Gossan Hill Group at Golden Grove, Western Australia, hosts two potentially economic volcanogenic massive sulphide deposits. The volcanic-sedimentary succession hosting this mineralisa
Jan 1, 1987
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Volcanics and Mineral Deposits Along a Plate Boundary
Waitemata Tectonic Event(25 Ma ago) created a subduction system from the northeast of Northland, causing: (1) the emplacement of the Northland Allochthon (24-23 Ma) which provided argillaceous limesto
Jan 1, 1997
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Volcanoes and Volcanic Risk in the Circum-Pacific
The Circum-Pacific is defined to include back arcs and continental areas of volcanism. Volcanoes must be regarded as dormant, if the time since their last eruption is less than about ten times the
Jan 1, 1987
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Volcanogenic Cu-Pb-Zn Mineralization in the Mons Cupri District, West Pilbara
The Mons Cupri Cu-Pb-Zn deposit is situated within a complex Archaean volcanic sequence dominated by rhyolitic fragmental rocks. This sequence is underlain by a 150 m group of rhyolitic ash flow t
Jan 1, 1973
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Volcanogenic Massive Sulfide Deposits in New Zealand
By R L. Brathwaite
In New Zealand, volcanogenic massive sulfide (VMS) deposits are found in three main geological environments associated with: 1. ophiolitic basalts of Oligocene age in Northland and East Ca
Jan 1, 2005
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Volume and Structural Changes Occuring During the Isothermal and Non-Isothermal Reduction of High Grade Hematite Pellets
By Morrison AL
The volume changes occurring during the reduction by hydrogen of single, high-grade hematite pellets under isothermal and non- isothermal conditions were investigated using a time-lapse photographi
Jan 1, 1980
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Volumetric Determination of Iron: New Method of Reduction
THE reduction of iron from the ferric to the ferrous state prior to its titration by permanganate or dichromate may give erroneous results in the presence of other reducible metals such as titanium. S
Jan 1, 1922
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Volumetric Reserves And Probability Estimates
By Stewart W. J
The volumetric method of estimating hydrocarbon resources and recoverable reserves is and probably will remain a dominant method in petroleum engineering. The method is technically very simple, bu
Jan 1, 1979
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Voorspoed Diamond Mine - Challenges of Re-Opening a Historical Mine with an Inferred Resource
The pyroclastic-filled Voorspoed kimberlite pipe has a low grade due to significant internal dilution which translates to a marginal business case. The site, with excavations, tailings dumps and build
Jan 1, 2009
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Wacker Sampling as an Effective Gold Exploration Tool in the Reefton Goldfield, Greenland Group, West Coast, New Zealand
By M E. Dunphy, P Silversmith
The Reefton Goldfield, both historically and potentially, represents a significant gold producing camp in the Westland province of New Zealand. Some two million ounces of gold have been produced from
Jan 1, 1997
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WAD Cynoprobe - A Case Study for the Development of an Online Weak Acid Dissociable (WAD) Cyanide Measurement Device
By P Lotz
With the recent increase in environmental awareness, gold mining companies are fast becoming signatories of the International Cyanide Management Code (ICMI, 2007). The objective of the Code is to impr
Jan 1, 2007
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Waihi Basin Structure in Light of Recent Geophysical Surveys
By R L. Brathwaite
As part of an investigation of the deep structure of the Waihi Basin, an extensive set of resistivity measurements was recently collected by DSIR Geology & Geophysics. The objective of this work i
Jan 1, 1991
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Waihi Gold - Extended Project
By M Maguire
The purpose of this paper is to provide an illustration of the Resource Management Act processes at their best. Many of you will be aware of the Martha Mine situated in the middle of Waihi Township in
Jan 1, 1998
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Waihi Gold Mine's Community Story
Waihi Gold Mining Company Limited, a wholly owned subsidiary of Normandy Mining Limited, operates the Martha gold mine, located in the township of Waihi, New Zealand. The operation, an unincorporated
Jan 1, 2000
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Waihi û A New Beginning
Newmont Waihi Gold operates the Martha Mine open pit at Waihi, New Zealand and is developing the Favona Underground Project two kilometres to the east. The Company is exploring the Waihi district unde
Jan 1, 2004
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Waihi-Paeroa Gold Extraction Co. Ltd.
THE following paper is a description of the plant and operations of the above company in their recovery and treatment of the quartz tailings deposited as final residues by the various mining companies
Jan 1, 1911
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WaihiÆs 2020 Vision: Part A: The Community's Blue-print
Gold was discovered at Waihi in 1878. In 1987 the modern Martha Mine opened in the middle of the town of Waihi. Newmont Waihi Gold as the current licence holder has been operating the mine since 2000.
Jan 1, 2006
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WaihiÆs 2020 Vision: Part B: Where to From Here?
For the past 3 years Waihi as a community has been actively engaged in consultation about its future with regard to the environmental, cultural, economic and social viability. This has been made possi
Jan 1, 2006