Freeport's Adkerson does not want to sell Grasberg mine to ...

The Grasberg ore bodies contain very high combined copper-gold grades, especially when considering the size of production. As ore ex-traction from the open pit will be soon uneconomic due to the increased strip, production will continue to move underground with block caved ore from the Grasberg …

Major Mines & Projects | Grasberg Mine

Sep 11, 2020· At full tilt in 2022, the Grasberg complex will produce 1.55 billion pounds (703kt) of copper and 1.6 million ounces of gold per year, which at today's prices are worth $7.9 billion.

How to Invest in Mining Stocks | The Motley Fool

Copper grade (%) Gold grade (g/t) Proved 413 0.54 0.32 604 0.51 0.30 Probable 272 0.45 0.21 761 0.42 0.21 Total 686 0.50 0.28 1,365 0.46 0.25 2018 Ore Reserve notes: (i) Estimated at commodity prices of US$3.30/lb copper and US$1,390/oz gold (ii) Reported using a breakeven economic cut‐off value that considers relevant modifying factors

Grasberg mine - Wikipedia

PT-FI began open-pit mining of the Grasberg ore body in 1990. The final phase of the Grasberg open pit was mined during 2019, including the removal of the open pit ramps. In aggregate, the Grasberg open pit produced over 27 billion pounds of copper and 46 million ounces of gold in the 30-year period from 1990 through 2019.

Gold in porphyry copper deposits: its abundance and fate ...

The Grasberg mine is one of the most polluting mines in the world. Every day, Freeport dumps 230,000 tonnes of polluted rubble in the Aghawagon river. This is equivalent to 3.25 billion tonnes over the total lifetime of the mine. The waste contains heavy metals such as copper, arsenic, cadmium and mercury, killing off life in the river.

Barrick Gold chief looks to next deal after first year at ...

Porphyry copper deposits are copper ore bodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit itself. Predating or associated with those fluids are vertical dikes of porphyritic intrusive rocks from which this deposit type derives its name. In later stages, circulating meteoric fluids may …

grasbergs copper and gold content

Oct 01, 2002· Gold abundances in porphyry copper deposits vary greatly, complicating efforts to define gold-rich porphyry copper deposits. The original definition was based on the Au/Mo ratios of porphyry copper deposits with no reference to their copper content, and resulted in the suggestion that gold-rich deposits were found largely in island arc regions (Kesler, 1973).

Lauku Labumi | Grasbergs - Dabīgi Piena Produkti | Latvia ...

Copper grade (%) Gold grade (g/t) Proved 413 0.54 0.32 604 0.51 0.30 Probable 272 0.45 0.21 761 0.42 0.21 Total 686 0.50 0.28 1,365 0.46 0.25 2018 Ore Reserve notes: (i) Estimated at commodity prices of US$3.30/lb copper and US$1,390/oz gold (ii) Reported using a breakeven economic cut‐off value that considers relevant modifying factors

Freeport-McMoRan Inc. - Freeport-McMoRan Provides Update

At average reserve grades of 0.96 percent copper and 0.72 grams per tonne of gold, 130,000 metric tons of ore per day is expected to equate to production of 850 million pounds of copper and 700,000 ounces of gold per year. Access to higher grades is expected in the early years of production. Second-Quarter 2019 Operational Highlights:

Porphyry copper deposit - Wikipedia

Oct 01, 2002· Gold abundances in porphyry copper deposits vary greatly, complicating efforts to define gold-rich porphyry copper deposits. The original definition was based on the Au/Mo ratios of porphyry copper deposits with no reference to their copper content, and resulted in the suggestion that gold-rich deposits were found largely in island arc regions (Kesler, 1973).

The $100bn gold mine and the West Papuans who say they are ...

grasbergs copper and gold content. ... years later in March 2007 Phelps Dodge merged with Freeport McMoRan Copper Gold whose principal asset is the massive Grasberg copper-gold mine in Indonesia in an agreed 259bn takeover by Freeport the smaller of the two compani Freeport-McMoRan sold a 13 stake in Morenci mine to Sumitomo Metal Mining SMM in ...

Paragenesis of the Grasberg Cu-Au deposit, Irian Jaya ...

Grasberg: Mining the richest and most remote deposit of copper and gold in the world, in the mountains of Irian Jaya, Indonesia [Mealey, George A] on Amazon. *FREE* shipping on qualifying offers. Grasberg: Mining the richest and most remote deposit of copper and gold …

Freeport-McMoRan Could Lose Over $3 Billion In Revenues ...

Freeport McMoRan will be hoping the latest strike at its huge Grasberg mine in West Papua won't emulate the 3 month 2011 strike that cut copper/gold production 15% GRASBERG COPPER/GOLD PROJECT WORKERS STRIKE | Mining Business Media - Resources, Minerals, Metals, Coal, Exploration Geology


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