Showing posts with label GOLD MINING IN AUSTRALIA PACIFIK. Show all posts
Showing posts with label GOLD MINING IN AUSTRALIA PACIFIK. Show all posts

Peak Gold Mines


Peak Gold Mines is a gold and copper mine underground which located in the Cobar Gold Field of Central West New South Wales, Australia, and began production in 1992. Peak Gold Mines produces gold dore for sale at the Perth mint and copper concentrate is sold to markets in Asia. 

The Peak Gold Mines comprise five commercially operating mines and a copper-gold-processing plant. The deposits, which all currently mined from underground, include, from south to north, the Perseverance, Peak, New Occidental, Chesney and New Cobar.

The Peak, New Occidental and Perseverance ore body are is accessed via a shaft and surface reduction in peak site. The new Cobar and Chesney ore body are accessed via a decline near the base of the new Cobar open pit. The Peak site is the processing plant and administration building.

At peak, Perseverance, New Occidental and New Cobar, do mining by using a bench stoping. If Chesney, a combination of bench stoping and open stoping is planned mining proceeds from bottom to top in each panel. Drifts are driven along strike to the ore at any level, developed a slot and ore is blasted into the cavity. Ore is extracted and waste rock is used to backfill the void. 

Peak Gold Mines in Cobar mining area, located about 600 kilometers northwest of Sydney and eight kilometers south of the town of Cobar in New South Wales (NSW), Australia. The property is of Sydney over 700 kilometers of highway and eight and a half kilometers of secondary and private roads. Limited resources are available at Cobar and generally available in Dubbo 300 kilometers east. The mines are operated by Peak Gold Mines Pty Ltd ( “PGM”), a subsidiary of the Company

Gold Mines Mineral rights exist about 86 110 hectares of mining leases and exploration licenses, including 33 832 hectares subject with an average maximum temperature of 33 degrees Celsius in summer and 16 degrees Celsius in winter.

Gold Mines Mineral rights exist about 86 110 hectares of mining leases and exploration licenses, including 33 832 hectares subject with an average maximum temperature of 33 degrees Celsius in summer and 16 degrees Celsius in winter.

Goldmines’ climate is semi-arid and average rainfall is about 416 millimeters per year. The landscape is mostly flat, consisting of sandy plains with small waves. The mine is named after the “peak”, a small conical hill 324.3 meters above sea level, which has the peak deposit located on its southern base. The vegetation at the mine consists largely of semiarid low forest, with little seasonal creeks and  rivers lined by taller eucalypt species.

Geology & Mineralization In Peak Gold Mine

The Cobar mining area is along the eastern margin of the Early Devonian age Cobar Basin, which lies in the northern part of the central belt of the Lachlan Orogen, and will of the regional scale Rookery Fault system.

The Peak Gold Mines operation is located in a 10-kilometer section of Rookery fault system, referred to as the “Peak mine corridor.” until today, five separate gold-copper deposits were developed in underground mines. Listed from south to north, they include: Perseverance, Peak, New Occidental, Chesney and New Cobar.

A sixth deposit, Great Cobar which was mined from around the time of the first world war until the mid-1940s, is located at the northern end of the peak-floor and provides an area of ​​renewed exploration focus.

Individual deposits occur as steeply dipping veins with equally short strike lengths (less than 300 meters), narrow widths (10 to 30 meters) and long vertical dimensions. For example, the peak and Perseverance have defined deposits to vertical depths of 500 to 700 meters. The Chesney and New Cobar deposits are currently being defined by shorter vertical areas and like all of the deposits along the Peak mine corridor remain open at depth. 

Mineralization of polymetallic sulphides consisting of gold-copper vary -lead-zinc assemblages at peak and Perseverance to simpler copper-gold in New Cobar, Chesney and Great Cobar. Generally, gold mineralization occurs as discrete lenses within broader envelopes of base metal mineralization.

Including commercial mine production from Great Cobar and the resurgence of mining in 1991, the Peak Mines corridor produced over 3.7 million ounces of potential gold and 200 million pounds of copper.

Processing Of Mineral Ores

Ore from Peak, Perseverance and New Occidental underground is crushed and hoisted onto a surface stockpile and eventually into the mill feed conveyor SAG. Ore from New Cobar and Chesney is dragged tip, where it is fed to the SAG mill feed conveyor via a separate container.

Gold and silver are recovered in a gravity circuit with Knelson concentrators, further concentrated in an intensive leach reactor electrolytically and mud in a gas-fired furnace smelted to gold doré bars produce. Gold, silver and copper are obtained as copper concentrate in a conventional flotation circuit.

The flotation concentrate is thickened, dewatered and stockpiled prior to the stage of the process to transporting to the smelter. A third method of gold and silver recovery by cyanidation in a tank leach circuit. The resulting sludge is smelted into gold dore bars. Metal recoveries are approximately 90% and 87% for gold and copper.

Exploration Potential In Peak Gold

Since the beginning of commercial production in 1991, underground exploration to the known ore body along the Peak corridor added to new reserves again, its for replace annual production.

For example, with a mineral reserve of 936,000 ounces of gold in the Peak deposit in 1991 begin to sustainable exploration and development mining reserves substitute has  of the end in the delineation of mineral reserves and resources amounting to almost three times  that amount as of the end of 2014.

With a twenty-year track record of successful reserves replacement and control of more than  75 kilometres of prospective geology along the greater Rookery fault trend, exploration at Peak continues to offer significant upside toward future exploration success.

Gold Mining In New Zealand

Prospecting and mining for gold in New Zealand constitute one of the leading gold producers in the world. It is the 29th in the world selected on the list of top gold producer that it relatively little size and this is the important considering New Zealand country produces Approximately 10.6 tonnes of gold per year and has much undeveloped gold resources.

Gold has won the top mineral resource in New Zealand and make a significant contribution to the economy of the country also. The mining sector employees more than twenty thousand people, and Approximately 1% of GDP to contribute of in the country.

Discovery Of Gold In New Zealand

Mining Operation Gold Fields In Agnew Gold Mine


Mining operations in underground Agnew gold mine
The Agnew Gold Mine and and previously named Emu Mine , is a gold mine located  375 kilometres north of Kalgoorlie, 3 kilometres  west of Agnew, Western Australia. Agnew Gold Mine is Acquired in 2001 by Gold Fields, mining company from South Africa, and It is one of two mines the Gold Fields company an operates in Australia, the other mine being the St Ives Gold Mine.

The Agnew gold deposit was first discovered in 1895, and the first mining operation by Waroonga Gold Mines, which then often changed ownership. As the legal entity holding and conducting mining activity on the Agnew mine mineral leases then in 2001  was incorporated The Agnew Gold Mining Company Proprietary Limited (AGMC)

Martha Gold Mine Unique Open Pit Mining By Newmont

Martha gold mine constitute open pit mine that is very unique, located in the township of Waihi, New Zealand
Martha mines constitute open pit mine that is very unique, because the mining area is located in a residential area and near to a thriving community. With a population of about 4,700 people, the town of Waihi is situated on the east coast of the North Island of New Zealand.  Martha gold mine is  located in the township of Waihi, New Zealand. and owned by the Newmont Mining Corporation  a leading gold producer in the world.

Gold mining in Waihi has a history that spans three centuries. Gold was discovered in the 1800s and mined underground in the first half of the 1900s. The last 24 years of the 1900s focused on exploration

The Martha Mine has been operating since 1988. Martha gold mining project  was the first major hard rock mining operation to be commissioned following the resurgence of the gold mining industry in New Zealand in the late 1970s. The mining licence was granted for the open pit Martha Mine in 1987 and development and mining of the Martha Mine open pit. In the 2000s

Mineral Ore deposit in Martha gold mine New Zealand
The climate of Waihi is affected by its local topography. The rainfall in Waihi is relatively high, averaging in excess of 2,100 mm/year. Geology in waihi comprises predominantly rhyolite, with some dacite. The Waihi gold deposits are low sulphide epithermal gold-silver veins with associated volcanic breccias. The gold veins are hosted within a fine-grained volcanic rock, andesite, aged between 3 and 12 million years ago (Ma), during the Pliocene and Miocene.


Process Of Gold Mining In Super Pit Mine Australia

Super pit gold mine is the largest open pit mine

Kalgoorlie mine In Australia or better known as the Super Pit is located off the Goldfields Highway on the south-east edge of Kalgoorlie, Western Australia. Super pit gold mine is the largest open pit mine which has a hole a length of about 3.5 kilometers, 1.5 kilometres wide and 570 metres deep that make up the rectangle.

The Super Pit gold mine is owned by Kalgoorlie Consolidated Gold Mines Pty Ltd, a company owned two joint venture between Barrick Gold Corporation and Newmont Mining Corporation with respective shares of 50%

Kalgoorlie Consolidated Gold Mines Pty Ltd (KCGM) was formed to manage the assets and operations of joint venture partners, Normandy Australia and Homestake Gold of Australia Limited.


Mineral deposit in super pit gold mine
Gold deposits Super Pit is one of the richest gold deposits in the world.  Composed of a series of mineralised faults known as lodes, a greenstone belt consisting of volcanic and sedimentary rocks and surrounded by extensive granite. These rocks all belong to the Archaean period of the Earth’s history and the goldfield is between 2.6 and 2.9 billion years old.  the deposit mainly occurs in a host rock known as the Golden Mile Dolerite.

The main host rock for mineralisation the Kalgoorlie district in Super Pit gold mine is the Golden Mile Dolerite, the largest of the dolerites in the area. There are two main styles of mineralisation. The Fimiston Style consists of classic Golden Mile lodes with abundant sulphides and tellurides. The Charlotte Style describes younger white quartz veins which are typically mined at Mt Charlotte, but have been found in other smaller deposits in the Kalgoorlie District.

The Golden Mile lodes have several characteristic orientations, each with slight variations in the style of the mineralisation. More than 1,000 individual ore lodes occur within the Golden Mile, some extending up to 1,800 metres long, 1,200 metres deep and 10 metres wide. They are all within an area over five kilometres long, two kilometres wide and more than one kilometre deep. The highest gold grades are typically associated with gold tellurides and alteration minerals with high vanadium contents.


Mining Operations And Processing Minerals Ore Gold In Kanowna Belle Gold Mine


Kanowna Belle gold mines lies within the archaean Norseman-Wiluna greenstone belt and consists of a series of stacked lenses that have been identified over a strike length of 600m and to a depth of over 1,000m. The Kanowna Belle Gold Mine is a gold mines located 19 km north east of Kalgoorlie, Western Australia, near the ghost town of Kanowna. Gold prospecting in Kanowna Belle Australia was first discovered in 1893 about a year after Bayley and Ford discovered the Coolgardie Field and not long after Paddy Hannan located the gold-bearing alluvials that led to the discovery of the Golden Mile at Kalgoorlie-Boulder, also in 1893.

In mid-1999, Delta Gold bought North’s 50% share for AUS$90m, and became the sole owner. Delta subsequently merged with fellow Australian company, Goldfields Ltd, to form AurionGold, which in turn was bought by Canada's Placer Dome. In early 2006, Barrick Gold Corp acquired Placer Dome in a US$10.4bn takeover, and now wholly owns the Kanowna group of operations, which includes Kanowna Belle, the Paddington mill and various other open-pit gold mines in the area.

Gold Prospecting And Gold Deposit Kanowna Belle Australia

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