Understanding the genesis of ultramafic soils and catena dynamics in Niquelândia, Brazil

Garnier, J.; Quantin, Cécile; Guimarães, Edi Mendes; Garg, V. K.; Martins, E. S.; Becquer, Thierry

doi:10.1016/j.geoderma.2009.04.020

Cited by 80 publications

(47 citation statements)

References 41 publications

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“…Moreover, Raous et al [45] identified willemseite, a Ni-rich form of talc, in their garnieritic sample from Barro Alto. Interestingly, smectite was not detected in our samples, whereas it has been found in "garnieritic" and soil samples coming from Niquelândia massif [31,42,45,46]. readily be transported and suspended in water, while the biggest and heaviest ones settle in the basin.…”

Section: Nickel Bearing Phasescontrasting

confidence: 51%

“…These rocks are rich in mafic minerals (olivine, pyroxene, chromite) containing large amounts of metals like nickel. Soils developed from the UM bedrock at Niquelândia have been recently investigated [31] and were shown to consist mainly in Ferralsols and Cambisols (IUSS, 2006 bushes on the ultramafic area, whereas a forest develops on the gabbros formations [25,26].…”

Section: Field Settingsmentioning

confidence: 99%

“…It is noticeable that all the identified clay minerals, as well as olivine, are potentially Ni bearing silicates commonly encountered in ultramafic soils [41][42][43][44][45][46][47], and goethite is known to be a great Ni scavenger in UM contexts [31,[48][49][50][51][52][53]. Moreover, Raous et al [45] identified willemseite, a Ni-rich form of talc, in their garnieritic sample from Barro Alto.…”

Section: Nickel Bearing Phasesmentioning

confidence: 99%

“…Moreover, they exhibit a high metal content such as Mn, Ni, Cr or Co, usually at harmful concentrations for the environmental systems [23,[28][29][30][31]. Due to the intense lateritic weathering of UM rocks, resulting in the formation of Ni lateritic ores, these areas are economically valuable for mining exploitation [32].…”

Section: Introductionmentioning

confidence: 99%

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Colloids and suspended particulate matters influence on Ni availability in surface waters of impacted ultramafic systems in Brazil

Zelano¹,

Sivry²,

Quantin³

et al. 2013

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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International audienceThe overall objective of this work was to assess the modification of Ni availability and lability consequently to anthropic activity. Surface waters were collected in two ultramafic complexes (Barro Alto and Niquelandia) from Goias State (Brazil) impacted by mining and metallurgical activities. For the nearly first time, Isotopic Exchange Kinetic technique (IEK) was performed on these natural water samples to quantify the pool of isotopically exchangeable Ni from the suspended particulate matter (SPM) in water, defined here as E-Ni(W). The SPM mineralogy was investigated by X-Ray Diffraction (XRD), Scanning and Transmission Electron Microscopy (SEM and TEM). This allowed to establish the link between Ni availability and its solid speciation. Goethite, chlorite, talc and serpentine were identified as the main Ni bearing phases in SPM far from metallurgy (Barro Alto site) while in samples located in the area influenced by metallurgy (Niquelandia) Ni was mainly associated to spherical micrometric particles, related to fly ash produced by the ore combustion. In Niquelandia samples 4,1, value was found ranging between 2.4 and 565 mu g L-1, while in Barro Alto E-Ni(W) was 62 mu g L-1, which corresponds to E-Ni values of 49,000 and 2350 mg kg(-1), in SPM from Niquelandia and Barro Alto, respectively. Moreover, IEK experiments highlighted differences in kinetic of Ni exchanges: the maximum E-Ni(W) value was reached after only 19 hours of interaction in Barro Alto sample, while in Niquelandia ones E-Ni(W) hardly reached 70 to 95% of the maximum after the same period of time. On the one hand, both the low proportion and high velocity of Ni exchanges observed in Barro Alto sample may be attributed to surface complexation on talc, serpentine, chlorite and goethite. On the other hand, both the higher proportion of exchangeable stock and slower isotopic exchanges should be mostly attributed in Niquelandia samples to Ni interaction with the anthropogenic spherical and porous particles of Fe-Mg-Si-Al composition, related to FBA released by metallurgic activity

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Section: Nickel Bearing Phasescontrasting

confidence: 51%

Section: Field Settingsmentioning

confidence: 99%

Section: Nickel Bearing Phasesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Colloids and suspended particulate matters influence on Ni availability in surface waters of impacted ultramafic systems in Brazil

Zelano¹,

Sivry²,

Quantin³

et al. 2013

Colloids and Surfaces A: Physicochemical and Engineering Aspect

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, evidence indicates that the total metal concentration in the soil is an insufficient criterion to assess environmental impact because concentration alone provides no information regarding the availability and potential toxicity of the metals (Vijver et al, 2004;Jin et al, 2005;Powell et al, 2005;Echevarria et al, 2006;Iizuka et al, 2011). Therefore, knowledge of the geochemical form and speciation of metals in soil fractions is important for predicting the mobility and bioavailability of heavy metals under natural circumstance (Cancès et al, 2003;Kierczak et al, 2008;Garnier et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Assessment of selected sequential extraction and the toxicity characteristic leaching test as indices of metal mobility in serpentinite soils

Tashakor

Yaacob

Mohamad

et al. 2014

Chemical Speciation & Bioavailability

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Serpentinite soils are characterised by high concentrations of chromium, nickel, and cobalt. The accumulation of heavy metals as non-degradable inorganic contaminants is of great concern. Under normal circumstances the form in which a metal exists governs its transport in the environment and thus, its hazards. In this study, a specific developed speciation analysis for tropical soils was applied to determine the mobility of Cr, Ni and Co in two serpentinitic soil outcrops in Malaysia. The combination of selective sequential extraction analysis (SEE) and X-ray diffraction of soil powders showed that Cr and Ni are primarily associated with the residual fraction of soil which is inherited from resistant silicates. The crystalline Fe-oxide fraction of soil is the second substanial scavenger of Cr and Ni, whilst the dynamics of Co are mostly controlled by Mn-oxide and the poor crystalline Fe-oxide. The more easily mobilised forms of the studied metals carried on soluble-exchangeable, surface adsorbed and organic matter fractions are of minimal compartments. Therefore these metals are basically not available in the environment. On the other hand, corroborating information on the mobility of the metals was gained by applying the toxicity characteristic leaching procedure test (TCLP). The consistent results of the TCLP with the SSE revealed the non-toxic effects of Cr, Ni and Co in the environment despite their overload accumulation in the analysed serpentinite soils.

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Genesis and Behaviour of Ultramafic Soils and Consequences for Nickel Biogeochemistry

Echevarria¹

2020

Mineral Resource Reviews

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Understanding the genesis of ultramafic soils and catena dynamics in Niquelândia, Brazil

Cited by 80 publications

References 41 publications

Colloids and suspended particulate matters influence on Ni availability in surface waters of impacted ultramafic systems in Brazil

Colloids and suspended particulate matters influence on Ni availability in surface waters of impacted ultramafic systems in Brazil

Assessment of selected sequential extraction and the toxicity characteristic leaching test as indices of metal mobility in serpentinite soils

Genesis and Behaviour of Ultramafic Soils and Consequences for Nickel Biogeochemistry

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