The geochemistry of cobalt

Young, R. S.

doi:10.1016/0016-7037(57)90056-x

Cited by 22 publications

(5 citation statements)

References 39 publications

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“…Unfortunately, such information is lacking. Therefore, the absence of Co porphyrins in crude oils may suggest either a predominance of nonreductive sulfided forms of cobalt ores or much lower abundance of Co relative to Ni and V. 17 In conclusion, the correlations between the occurrence of metal porphyrins in crude oil and composition of surrounding mineral matter cannot be established because of an incomplete geochemical database. A high reducibility of V and Ni oxides to VO and Ni, respectively, compared to other metal oxides provides a plausible explanation for the exclusive occurrence of VO and Ni porphyrins in crude oil.…”

Section: ■ Reducibility Of Metal Oxidesmentioning

confidence: 97%

“…The occurrence of both oxidic and sulfidic forms of transition metals in the earth crust has been well-documented. 17 The comparison of driving forces in Table 2 to those in Table 3 shows that metal sulfides are much more resistant to reduction than corresponding metal oxides. For example, if the ΔG values of NiO and CoO (Table 2) are used for the estimate of the equilibrium constant, the value of the latter would be larger by more than an order of magnitude compared to those for the reduction of NiS and CoS (Table 3).…”

Section: ■ Reducibility Of Metal Oxidesmentioning

confidence: 99%

“…The occurrence of both oxidic and sulfidic forms of transition metals in the earth crust has been well-documented . The comparison of driving forces in Table to those in Table shows that metal sulfides are much more resistant to reduction than corresponding metal oxides.…”

Section: Reducibility Of Metal Oxidesmentioning

confidence: 99%

“…Unfortunately, such information is lacking. Therefore, the absence of Co porphyrins in crude oils may suggest either a predominance of non-reductive sulfided forms of cobalt ores or much lower abundance of Co relative to Ni and V …”

Section: Reducibility Of Metal Oxidesmentioning

confidence: 99%

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On Exclusivity of Vanadium and Nickel Porphyrins in Crude Oil

Furimsky¹

2016

Energy Fuels

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Section: ■ Reducibility Of Metal Oxidesmentioning

confidence: 97%

Section: ■ Reducibility Of Metal Oxidesmentioning

confidence: 99%

Section: Reducibility Of Metal Oxidesmentioning

confidence: 99%

Section: Reducibility Of Metal Oxidesmentioning

confidence: 99%

See 2 more Smart Citations

On Exclusivity of Vanadium and Nickel Porphyrins in Crude Oil

Furimsky¹

2016

Energy Fuels

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“…According to Donaldson et al under oxidizing conditions, cobalt shows a strong tendency to concentrate with manganese oxides [22]. During the weathering of mafic and ultramafic rocks, manganese and cobalt oxides tend to accumulate in the upper levels of a deposit, while nickel moves downward with magnesia and silica to form laterites [22,23]. Cobalt is a common element in the Earth's crust, averaging close to 17.3 ppm [24].…”

Section: Cobalt Geochemistrymentioning

confidence: 99%

Cobalt Metal: Overview of Deposits, Reserves, Processing, and Recycling

Picazo-Rodriguez,

Toro,

Román

et al. 2023

Preprint

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Cobalt, like other critical elements, is gaining in importance today. The great technological advances and the deep knowledge of the physical and chemical properties of this element have allowed to enhance its applications in various fields, such as: catalysts, paints, alloys for the mechanical and aerospace industries, as well as the medical sector and in recent times, its use within the rechargeable battery industry. The main exploitable deposits are in the Democratic Republic of the Congo, which have economic potential due to a strong influence on their mineralization processes. However, the growing demand for cobalt and the search for less dependence on African deposits leads to targeting other regions, so it is necessary to carry out exhaustive exploration to find out the potential of its reserves for a subsequent benefit of the mineral. Generally, cobalt comes as a by-product of the extraction of other metallic minerals, mainly from Cu-Co, Ni-Co, Ni-Cu-Co deposits. From the above, a first review is carried out on the differences that exist in the geochemical, mineralogical and forecast properties that exist within the different deposits that harbor cobalt. As a second review topic, it delves into efficient processing for cobalt recovery, which is generally carried out by flotation, acid leaching, in addition to its recovery from secondary sources, such as batteries and metallurgical waste. However, generally speaking there is still a vast lack of fundamental knowledge about the processability of cobalt. Said processing has been affected from the point of view of mineralogy, that is, understanding and knowing the cobalt-bearing minerals, as well as gangue mineralogy, these aspects exercise significant control during their processing and selection of the most appropriate route. suitable for cobalt extraction (leaching and/or flotation). In this context, the document concludes with a vision of the challenges that the mining industry must implement to enter circular economy models, mainly in the creation of sustainable processes from secondary sources.

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Clay Mineral-Brine Interactions During Evaporite Diagenesis: Lanthanide Distribution in WIPP Samples

Brookins

et al. 1980

Scientific Basis for Nuclear Waste Management

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The geochemistry of cobalt

Cited by 22 publications

References 39 publications

On Exclusivity of Vanadium and Nickel Porphyrins in Crude Oil

On Exclusivity of Vanadium and Nickel Porphyrins in Crude Oil

Cobalt Metal: Overview of Deposits, Reserves, Processing, and Recycling

Clay Mineral-Brine Interactions During Evaporite Diagenesis: Lanthanide Distribution in WIPP Samples

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