otago gold alluvial mining
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otago gold alluvial mining

otago gold alluvial mining - deepsesje

Patearoa gold: Alluvial ... - University of Otago. 2021-10-14 Erosion of the gold-bearing schist may have contributed to the rich alluvial gold of the region. Patearoa is an historic gold mining area on the southern edge of the Maniototo Basin. The goldfield lies on the northern slopes of the . Alluvial gold along the northeast Otago margin ...

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Alluvial gold mine approved Otago Daily Times Online News

Aug 23, 2016  There's no need to travel to Rio to win gold, as a large-scale alluvial mining operation near Roxburgh has got resource consent. However, opposing neighbours may appeal. Independent commissioners yesterday released a decision allowing Kokiri Lime Company Ltd to mine on 163ha of land at Coal Creek Flat now used for pastoral farming and horticulture.

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Otago – Te Ara Encyclopedia of New Zealand

Historically in Otago the majority of recovered gold was alluvial – less than 10% came from hard rock. Otago’s gold is linked to its schist rocks. Over the past 100,000 years glaciers ground away at the rocks, which were threaded with quartz veins containing gold, and rivers washed and sorted the gravels.

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Central Otago Gold Story

Otago’s alluvial gold comes from its schist mountains. During the ice ages, huge glaciers crushed and spread the schist through the valleys. Since then, the mighty Clutha Mata-au has acted like a huge sluice, leaving behind fine particles of gold where its waters flowed.

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Gold, Department of Geology, University of Otago, New Zealand

Alluvial gold along the northeast Otago margin; Rise of modern mountains on Otago’s northeast margin; Patearoa gold: Alluvial concentrations in a dynamic environment; Gold Cycle - Gold from the mountains to the sea. Gold occurs in thin veins of white quartz near the crest of the Southern Alps. It is transported in rivers and deposited near ...

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Gold Rush and Gold Mining: A ... - University of Otago

As a result, various misconceptions and misunderstandings have entered into the New Zealand and wider gold rush historiography. A conflation of gold rushing with gold mining is sometimes evident and another misconception entrenches corporate structure with the level of capitalisation and mixes the mining of alluvial and quartz reef gold.

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New Zealand Goldmining - Introduction and Techniques

In the Otago most of the Gold is Alluvial Gold - that is Gold is contained in alluvial gravels, deposited by the action of water and ice. The gravel does not need to be crushed and the separation is by various techniques of "washing" to separate the Gold which is very dense (density 19) from the much less dense rocks and sand.

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Gold-Dredges: From Dunedin to Siberia - University of Otago

Gold-Dredges: From Dunedin to Siberia. Toitū’s hefty dredge bucket, built by Dunedin firm A T Burt Ltd. Photograph author’s own. Gold-dredging was a New Zealand phenomenon. As early as 1863, during the alluvial gold boom, miner Charles Nicholson had invented a spoon dredge to lift gold-bearing gravel from the Molyneux (now Clutha) River ...

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Goldrush Online

Otago Mining Records (1861 - 1866) West Coast Mining Records (1865 - 1871) ... Gold dust and nuggets from alluvial mining was melted down and turned into gold/silver (bullion) bars. Digging For Quartz Gold. Quartz gold is found underground in the main reefs or veins in the living rock walls. In Thames, New Zealand in 1868, a few rare reefs were ...

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Gold New Zealand Geographic

This is certainly true of industrial gold-mining, though here the scale, complexity and microscopic precision of extraction can be staggering. If my nugget-detecting was a needle-in-the-haystack kind of quest, at Macraes Flat, in coastal Otago, the gold-miners seem to pursue the traces and residues that such needles may have left behind.

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Placer gold and associated supergene mineralogy at Macraes ...

2016). By contrast, alluvial gold in placers at Macraes Flat, like alluvial gold elsewhere in the Otago goldfield, is relatively coarse, with typical particle size ranging between 50 µm and 1 mm (Youngson Craw 1993, 1999). The contrast in gold particle size between base-ment sources and placer deposits results mainly from

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Nevis Valley, Central Otago District, Otago Region, New ...

Nevis Valley, Central Otago District, Otago Region, New Zealand : Gold, coal and shale oil. More information is needed on the origins of the uncommon species anapaite, listed against Nevis Valley. The Nevis Valley is an approximately 50 kilometre long ...

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otago gold alluvial mining - deepsesje

Patearoa gold: Alluvial ... - University of Otago. 2021-10-14 Erosion of the gold-bearing schist may have contributed to the rich alluvial gold of the region. Patearoa is an historic gold mining area on the southern edge of the Maniototo Basin. The goldfield lies on the northern slopes of the . Alluvial gold along the northeast Otago margin ...

More

Central Otago Gold Story

Otago’s alluvial gold comes from its schist mountains. During the ice ages, huge glaciers crushed and spread the schist through the valleys. Since then, the mighty Clutha Mata-au has acted like a huge sluice, leaving behind fine particles of gold where its waters flowed.

More

Alluvial gold mine approved Otago Daily Times Online News

Aug 23, 2016  There's no need to travel to Rio to win gold, as a large-scale alluvial mining operation near Roxburgh has got resource consent. However, opposing neighbours may appeal. Independent commissioners yesterday released a decision allowing Kokiri Lime Company Ltd to mine on 163ha of land at Coal Creek Flat now used for pastoral farming and horticulture.

More

GOLD RUSH AND GOLD MINING: A ... - University of Otago

Mar 18, 2021  This thesis is an attempt to marry my experience as a mining engineer in alluvial gold ... led by the Gabriel's Gully or Tuapeka gold rush in Otago in 1861. An alluvial diamond rush in South Africa in 1870 presaged a corporate scramble for quartz reefs, not a rush,

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Seeking to mine gold in Winding Creek Valley Otago Daily ...

Jul 30, 2021  A South Island mining company is seeking to renew extraction of gold from a Northern Southland area that has a long history with the prized mineral. Bromoore Gold Limited has lodged resource consent applications to establish an alluvial gold mine in Winding Creek Valley, to the east of Waikaia. The operation would involve excavation of two ...

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Martha Hill Mine NZHistory, New Zealand history online

The early Otago gold rushes had been alluvial but most late 19th-century mining there, in Westland and at Thames was in quartz country, which required expensive machinery. The Martha Hill Mine (named after prospector William Nicholl’s sister) at Waihī had produced more gold than any other in New Zealand history - 224,000 g of gold and ...

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Mineral resources / Economic and applied geology / The ...

Both alluvial and lode gold mining are currently taking place, particularly in Otago and Coromandel. The large open pit mines at Macraes in Otago and Waihi in the Coromandel region are the largest in New Zealand. Copper has been mined as sulphide ore in Northland, ...

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Otago Gold Rush - Wikipedia

The Otago Gold Rush (often called the Central Otago Gold Rush) was a gold rush that occurred during the 1860s in Central Otago, New Zealand.This was the country's biggest gold strike, and led to a rapid influx of foreign miners to the area - many of them veterans of other hunts for the precious metal in California and Victoria, Australia.. The rush started at Gabriel's Gully but spread ...

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Nevis Valley, Central Otago District, Otago Region, New ...

Nevis Valley, Central Otago District, Otago Region, New Zealand : Gold, coal and shale oil. More information is needed on the origins of the uncommon species anapaite, listed against Nevis Valley. The Nevis Valley is an approximately 50 kilometre long ...

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A 35-year endeavour: Bendigo's Rise and Shine sluicing ...

abandoning of solitary mining efforts to work in syndicates or for wages, becoming large-scale alluvial sluicers ( Otago Daily Times 18 June 1864:1). Sluicing was favoured for gold in the strata of gravels on hill sides and in riverside terraces. Water was conveyed along water races from its source to hoses connected to water guns

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To whom it may concern, Please find attached a submission ...

From: Kate McKenzie To: RPS Subject: Submission of Stoney Creek Mining Ltd and Alluvium Ltd on proposed Otago Regional Policy Statement Date: Thursday, 2 September 2021 7:56:35 p.m. Attachments: 02092021 Stoney Creek Mining Ltd Alluvium Ltd Submission PORPS.pdf To whom it may concern, Please find attached a submission on behalf of Stoney Creek Mining Ltd and Alluvium Ltd

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Lammerlaw Gold Exploration Project – NZ – New Age ...

The regional geology is dominated by the Otago Schist belt, a high-grade metamorphic schist, which has a long history of both hard rock and alluvial gold mining. The Otago Schist is divided into structural blocks or zones of increasing metamorphic grade known as; Sub-Greenschist Facies, Lower Greenschist Facies, Upper Greenschist Facies and ...

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otago gold alluvial mining - deepsesje

Patearoa gold: Alluvial ... - University of Otago. 2021-10-14 Erosion of the gold-bearing schist may have contributed to the rich alluvial gold of the region. Patearoa is an historic gold mining area on the southern edge of the Maniototo Basin. The goldfield lies on the northern slopes of the . Alluvial gold along the northeast Otago margin ...

More

Alluvial gold – Gold and gold mining – Te Ara Encyclopedia ...

Alluvial gold. These gold nuggets have been mined from river gravels in Otago. The gold has been beaten by boulders in flood waters, then folded back over countless times to give these flattened shapes. Dark impurities visible in the larger nuggets are black mineral sands (possibly magnetite) and the lighter impurities are quartz grains.

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Alluvial gold mine approved Otago Daily Times Online News

Aug 23, 2016  There's no need to travel to Rio to win gold, as a large-scale alluvial mining operation near Roxburgh has got resource consent. However, opposing neighbours may appeal. Independent commissioners yesterday released a decision allowing Kokiri Lime Company Ltd to mine on 163ha of land at Coal Creek Flat now used for pastoral farming and horticulture.

More

GOLD RUSH AND GOLD MINING: A ... - University of Otago

Mar 18, 2021  This thesis is an attempt to marry my experience as a mining engineer in alluvial gold ... led by the Gabriel's Gully or Tuapeka gold rush in Otago in 1861. An alluvial diamond rush in South Africa in 1870 presaged a corporate scramble for quartz reefs, not a rush,

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Goldmining Today Otago Goldfields Heritage Trust ...

The goldmining era is by no means at an end in Otago. Sites of old gold rushes such as the Clutha and Cardrona River beds are offering up new riches to mining companies. As new technologies are developed former gold mining areas are being re-opened. In the early 1990s, alluvial deposits at Island Block (near Millers Flat), and in the late 1990s ...

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The Otago Gold Rush in Southern New Zealand ...

Aug 24, 2021  Gold discovery in Otago in 1861 marked the beginning of an era of unprecedented economic growth in New Zealand. Thousands of prospectors flocked to the area in search of gold. While some struck riches others gave up their dreams and left. This is the story of the Otago gold rush, its impact on the country’s []

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Livingstone Diggings, Waitaki District, Otago Region, New ...

Livingstone Diggings, Waitaki District, Otago Region, New Zealand : Alluvial gold in gravels. Abandoned. Livingstone is 10 kilometres south of Duntroon, once a thriving gold mining community, but now a couple of old wooden buildings, and half a dozen houses are ...

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Gold mine would set benchmark Otago Daily Times Online News

Jun 17, 2016  A large-scale gold mine proposed near Roxburgh will not only be economically viable, it will set the benchmark for best-practice environmental mining and rehabilitation, its developer says. The first day of a hearing into the resource consents for an alluvial gold mine at Coal Creek was held in Alexandra yesterday Kokiri Lime Co Ltd owner Mack ...

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13. External links and sources – Gold and gold mining – Te ...

Otago gold. The Otago University geology department, Gold research. Recycling and chemical mobility of alluvial gold. This paper (PDF, 1.74 MB) by J. Youngson and D. Craw, published in the New Zealand Journal of Geology Geophysics in 1996, which summarises the occurrence of alluvial gold in Otago.

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Papers Past Newspapers Otago Witness 20 February ...

Nov 03, 2021  GOLD MINING IN BRAZIL. A BIG CONCESSION Mr J. R. Boyett, proprietor of the Wild River Times, Hevbsrton, Queensland, has courteously placed at our disposal the following interesting letter, giving some particulars of mining as earned on at the Rio d'Oro River, Brazil — " Heibsrton, 9th January. IDOI " My clear Boyett, — As your old country (Xew Zealand) is the pioneer and the home of

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(PDF) Macraes orogenic gold mine, Otago Schist, New Zealand

The alluvial gold mining industry in New Zealand underwent a boom in the 1890s and suffered a decline from then on, arrested only in the early 1980s when a fresh look at the techniques employed ...

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A New Gold Rush after a 150 years at Otago is a modern-day ...

Jun 20, 2012  Professor of geology at Otago University Dave Craw say Glass Earth’s approach is clever because the easier alluvial gold production near the surface is

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