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'Concerning' levels of heavy metals found in people living …

Tests on the hair and nails of children and adults living in Angurugu, on Groote Eylandt, have shown "concerning" levels of manganese, according to the local lands council.

Samancor Expanding on Groote Eylandt

The mine at Groote Eylandt was commissioned in 1965 and currently accounts for more than 15% of the world's high-grade manganese ore production. Ore is mined by open-cut, strip mining methods from GEMCO'S 84-km2 mining lease on the western side of the island and is exported around the world.

Processing of Groote Eylandt Manganese Ores

The manganese ore deposits at Groote Eylandt are quite variable both in regard to grade and physical cond- ition. In order to treat a wider range of these ores and to increase …

South32 rules out Groote Eylandt manganese exports for …

Groote Eylandt's manganese mine will not export any ore until January 2025 at the earliest following extensive damage from a tropical cyclone that hit the island in March.

Groote Resources enters final stages for approvals for Groote Eylandt …

The company has a "conservative resource target" of in excess of 50 million tonnes at its Groote Eylandt Manganese Project, with potential for a proposed Direct Shipping Ore operation of 2 – 3 ...

S32 ASX: manganese mine repairs to take a year following …

Operations at South32's mine on Groote Eylandt, 630 kilometres east of Darwin in the Gulf of Carpentaria, were suspended in March after Tropical Cyclone Megan unleashed record rain and the ...

BHP completes Gemco second stage expansion in Australia

The completion of the second stage of the Groote Eylandt expansion project coincides with BHP's celebration of 50 years of mining from the manganese operation in the Northern Territory.

Groote Eylandt

Groote Eylandt - Oxide ore. If you have additions or corrections to the data for this deposit please contact webmaster. Location - Australia, Northern Territory. Age (of protore) - 97 …

PorterGeo Database

The Groote Eylandt manganese deposit is located on the island of Groote Eylandt in the Gulf of Carpentaria, Northern Territory, Australia, some 50 km from the coast of Arnhem …

Nature and development of supergene manganese deposits, …

Supergene manganese ores occur on Groote Eylandt in association with other secondary rocks. Over primary sedimentation features (e.g. oolitic and pisolitic units), …

World's 2nd-biggest manganese mine could be offline for …

South32's Groote Eylandt open pit manganese mine in Australia's Northern Territory was damaged by a cyclone in March. The second-largest manganese mine in the world could stay offline for months after a mid-March cyclone flooded mine pits and smashed a bulk carrier into a pier, analysts told S&P Global Commodity Insights.

Cyclone Megan wreaks havoc on South32 manganese port

South32's co-owned Groote Eylandt manganese mine, located 630 kilometres east of Darwin, is the world's largest single producer of the metal and exported 5.9 million tonnes worth $1.53 billion ...

PorterGeo Database

The Groote Eylandt manganese deposit is located on the island of Groote Eylandt in the Gulf of Carpentaria, Northern Territory, Australia, some 50 km from the coast of Arnhem Land and 650 km ESE of Darwin. Groote Eylandt lies on the eastern margin of the Proterozoic McArthur Basin. The ore deposit is developed within flat lying Cretaceous …

OREAS 171 | Certified Reference Material (CRM) – OREAS

OREAS 171 is a supergene manganese ore matrix-matched certified reference material (MMCRM) prepared and certified by Ore Research & Exploration Pty Ltd. The material was sourced from the Groote Eylandt Mining Company Pty Ltd (GEMCO) Mn deposit which is hosted within a shallow dipping Lower Cretaceous sedimentary rock unit.

This manganese miner is soaring

This comes as South32 revealed its subsidiary Groote Eylandt Mining Company (GEMCO) – one of the world's largest manganese miners – won't export product again until the March quarter of 2025 after its wharf was partially destroyed by Tropical Cyclone Megan.

Fresh call for health tests on Groote Eylandt due to mine …

The reshuffled Northern Territory government has refused to investigate health concerns about the remote manganese mine at the centre of former chief minister Natasha Fyles's resignation in December.

GEMCO

Located on the island of Groote Eylandt, in the Gulf of Carpentaria in Australia's Northern Territory, Groote Eylandt Mining Company (GEMCO) is an open-cut, strip-mining operation that produces high grade manganese ore.

Manganese (Mn) Ore | Minerals, Occurrence, Deposits

Australia also has substantial manganese resources, with the Groote Eylandt deposit being one of the largest and highest-grade manganese ore deposits in the world.

Groote Resources aiming to become "major" manganese …

The Gemco leases covered all of Groote Eylandt but only up to the shoreline and contain a resource currently measured at 160 million tonnes at a grade of 45.5% manganese located along the western ...

South32 locks in land access agreement for Australian manganese …

The Groote Eylandt project is an open cut mining operation producingabout 4.8 million tonnes per annum of high-grade manganese for export to Asia.

Building future Groote progresses

The Groote Eylandt project produces about 5 million tonnes of manganese ore a year.

(PDF) Properties of Manganese Ores and Their Change in …

The paper presents results of a study of the properties of Wessels, Groote Eylandt, CVRD, and Gabonese manganese ores and their change in the process of calcinations in different gas atmospheres. Wessels and Groote Eylandt manganese ores were examined at the University of New South Wales (Australia) using XRD, optical, SEM and EPMA analyses; …

China's silico-manganese futures near 7-month high after …

In March, the diversified miner withdrew its fiscal 2024 forecast for Australian manganese output after the cyclone shut operations at its Groote Eylandt Mining Co (GEMCO) unit in the Gulf of ...

South32 expects prolonged suspension of Groote Eylandt manganese …

Commodities giant South32 said on Monday that manganese ore exports from Groote Eylandt mine, in the Northern Territory, were likely to remain suspended until 2025 owing to extensive damaged ...

The impact of South32 and Anglo American's manganese mine expansion

A joint venture between South32 and Anglo American, Groote Eylandt's GEMCO mine was given consent by the Anindilyakwa Land Council (ALC), which may secure future royalties. Nigel Scullion, Australia's indigenous affairs minister, must approve any formal deal between South32 and traditional land owners. However, he has said in a …

South32 halts guidance as cyclone Megan batters manganese …

Located on the island of Groote Eylandt in the Gulf of Carpentaria, GEMCO is an open-cut, strip-mining operation that is one of the largest high-grade manganese ore producers in the world.

Mine Details | MiningLink.au

The GEMCO manganese mine is located in the Northern Territory, on Groote Eylandt, a part of the Arnhem Land Aboriginal Reserve, near the community of Angurugu. It is 60 percent owned by South32 and the remaining 40 percent by Anglo Pacific. Groote Eylandt is situated 630 kilometres east of Darwin and approximately 50 kilometres off the eastern …

Mine Details | MiningLink.au

The Groote Eylandt Mining Company (GEMCO) was commissioned in 1965 to mine high grade manganese ore. The mining method is undertaken by open cut strip mining. Once the ore has been removed the mined out area is backfilled with previously stored overburden and top soil. Rehabilitation then takes place with the planting of native trees …

E25 explores Butcherbird restart amid record high manganese ore …

Prices have escalated following disruptions at South32's Groote Eylandt (Gemco) operations in the Northern Territory. Typically producing over six-million tonnes a year of high-grade manganese ...

The biogeochemical origin of the Groote Eylandt manganese …

The sedimentary manganese ore deposit of Groote Eylandt, Australia, is an example of the Orthoquartzite-Glauconite-Clay Association, and was formed during a short …

A Review of Low Grade Manganese Ore Upgradation Processes …

The main manganese oxide ore beneficiation plants such as those found in GEMCO in Australia (Groote Eylandt Mining Company, part of the South 32 group) and COMILOG in Gabon (part of the Eramet ...

Processing of Groote Eylandt Manganese Ores

The manganese ore deposits at Groote Eylandt are quite variable both in regard to grade and physical cond- ition. In order to treat a wider range of these ores and to increase production a new primary-crusher and' concentrator complex costing $8 million has been installed and commissioned to treat ore at the rate of 12,000 tonnes per day. The initial …

(PDF) Phase compositions of manganese ores and their …

The paper presents results of a study of the properties of Wessels, Groote Eylandt, CVRD, and Gabonese manganese ores and their change in the process of calcinations in different gas atmospheres. Wessels and Groote Eylandt manganese ores were examined at the University of New South Wales (Australia) using XRD, optical, SEM and EPMA analyses; …

Mineralogy of the Groote Eylandt manganese oxides: A review

The mineralogy and genesis of the tetravalent manganese oxides present in the Groote Eylandt ore are discussed on the basis of recent mineralogical concepts. Their mechanisms of formation on Groote Eylandt are described in terms of primary sedimentation (formation of vernadite, romanechite, pyrolusite, todorokite); diagenesis …

Manganese bulk carrier smashes into remote Northern …

A bulk carrier loaded with 41,000 tonnes of manganese ore has crashed into mining company South32's loading wharf on the remote Groote Eylandt in the Northern Territory, causing "severe damage ...

Groote Eylandt | Aboriginal culture, mining, manganese

Groote Eylandt is a barren and rocky outlier of the sunken coast of the Arnhem Land plateau that has deeply embayed north and east coasts and rises to 520 feet (158 metres) at its centre. Aboriginal peoples inhabited the island beginning about 8,000 years ago. For centuries, fishers from Makassar journeyed to the surrounding waters in search of ...

About Us – Groote Eylandt And Bickerton Island Enterprises

The ALC collects mining royalties from the Groote Eylandt Mining Company (GEMCO) which has been extracting high-grade manganese ore on Groote Eylandt since 1964.

General Motors And Element 25 To Expand U.S. EV Supply …

Element 25 Limited and General Motors LLC (GM) sign definitive agreement for the supply of battery grade high-purity manganese sulfate (HPMSM) for GM's electric vehicle (EV) battery requirements.

Nature and development of supergene manganese deposits, Groote Eylandt

Supergene manganese ores occur on Groote Eylandt in association with other secondary rocks. Over primary sedimentation features (e.g. oolitic and pisolitic units), secondary Mn-oxides and gangue minerals nowadays belong to the most important components in the deposits.

Mineralogy of manganese oxides from Groote Eylandt

The manganese ores on Groote Eylandt occur in a flat-lying horizon in a series of Lower Cretaceous sands and clays which overly unconformably the Middle Proterozoic sandstone basement. The ore horizon exhibits a variety of textural and compositional ore types. Textural types include pisolites and concretions, either free or cemented into massive, …