The role of carbonate complexes and crystal habit on rare earth element uptake in low-temperature calcite in fractured crystalline rock

Maskenskaya, Olga M.; Drake, Henrik; Mathurin, Frédéric; Åström, Mats E.

doi:10.1016/j.chemgeo.2014.10.030

Cited by 14 publications

(9 citation statements)

References 71 publications

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“…Their results also suggest a crucial role of speciation during REE sequestration. The latter is also supported by data from natural calcites precipitated at low temperatures (Maskenskaya et al, 2015).…”

Section: Reey Partitioningmentioning

confidence: 59%

“…On average, calculated La/Yb N ratios were similar to current values, yet extended one order of magnitude below and above the current range. Maskenskaya et al (2015) point out that discrepancies can result from the colloidal REE fraction, included in the groundwater analyses (Mathurin et al, 2014), yet most likely unavailable for incorporation in calcite. Additionally, the concentration-dependent partition ratios from Zhong and Mucci (1995) at REE concentrations of 11 ppm are likely inappropriate for the studied groundwater concentrations.…”

Section: Calcite Coatings In Laxemar Sweden (≤50°c)mentioning

confidence: 97%

“…12A; Maskenskaya et al, 2015). The calcites likely precipitated in equilibrium with low-temperature fluids (≤ 50°C) within the last 10 million years.…”

Section: Calcite Coatings In Laxemar Sweden (≤50°c)mentioning

confidence: 99%

“…Data from current groundwater compositions allowed Maskenskaya et al (2015) to back-calculate the paleo-groundwater compositions. On average, calculated La/Yb N ratios were similar to current values, yet extended one order of magnitude below and above the current range.…”

Section: Calcite Coatings In Laxemar Sweden (≤50°c)mentioning

confidence: 99%

See 3 more Smart Citations

Unraveling rare earth element signatures in hydrothermal carbonate minerals using a source–sink system

Debruyne

Hulsbosch

Muchez

2016

Ore Geology Reviews

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Section: Reey Partitioningmentioning

confidence: 59%

Section: Calcite Coatings In Laxemar Sweden (≤50°c)mentioning

confidence: 97%

“…12A; Maskenskaya et al, 2015). The calcites likely precipitated in equilibrium with low-temperature fluids (≤ 50°C) within the last 10 million years.…”

Section: Calcite Coatings In Laxemar Sweden (≤50°c)mentioning

confidence: 99%

Section: Calcite Coatings In Laxemar Sweden (≤50°c)mentioning

confidence: 99%

See 2 more Smart Citations

Unraveling rare earth element signatures in hydrothermal carbonate minerals using a source–sink system

Debruyne

Hulsbosch

Muchez

2016

Ore Geology Reviews

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“…(11) The very few studies of trace-element abundance in young calcite from these settings (mainly Sweden) have shown only partial correspondence with the trace-element abundance in groundwater when using p Me from the laboratory. (8,9,25) This can be explained, at least partly, by a complex (unmatching) timing relationship, that is, the waters presently residing in the fractures may be much younger (Holocene in the upper 500 m) than the calcite in the fractures (mainly pre-Holocene). There is thus a strong need to investigate trace element incorporation into calcite in situ during natural conditions in deep crystalline bedrock.…”

Section: Introductionmentioning

confidence: 99%

Incorporation of Metals into Calcite in a Deep Anoxic Granite Aquifer

Drake

Mathurin

Zack

et al. 2018

Environ. Sci. Technol.

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Understanding metal scavenging by calcite in deep aquifers in granite is of importance for deciphering and modeling hydrochemical fluctuations and water-rock interaction in the upper crust and for retention mechanisms associated with underground repositories for toxic wastes. Metal scavenging into calcite has generally been established in the laboratory or in natural environments that cannot be unreservedly applied to conditions in deep crystalline rocks, an environment of broad interest for nuclear waste repositories. Here, we report a microanalytical study of calcite precipitated over a period of 17 years from anoxic, low-temperature (14 °C), neutral (pH: 7.4-7.7), and brackish (Cl: 1700-7100 mg/L) groundwater flowing in fractures at >400 m depth in granite rock. This enabled assessment of the trace metal uptake by calcite under these deep-seated conditions. Aquatic speciation modeling was carried out to assess influence of metal complexation on the partitioning into calcite. The resulting environment-specific partition coefficients were for several divalent ions in line with values obtained in controlled laboratory experiments, whereas for several other ions they differed substantially. High absolute uptake of rare earth elements and U(IV) suggests that coprecipitation into calcite can be an important sink for these metals and analogousactinides in the vicinity of geological repositories.

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Differentiating between hydrothermal and diagenetic carbonate using rare earth element and yttrium (REE+Y) geochemistry: a case study from the Paleoproterozoic George Fisher massive sulfide Zn deposit, Mount Isa, Australia

et al. 2021

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Carbonate minerals are ubiquitous in most sediment-hosted mineral deposits. These deposits can contain a variety of carbonate types with complex paragenetic relationships. When normalized to chondritic values (CN), rare-earth elements and yttrium (REE+YCN) can be used to constrain fluid chemistry and fluid-rock interaction processes in both low- and high-temperature settings. Unlike other phases (e.g., pyrite), the application of in situ laser ablation-inductively coupled plasma-mass spectroscopy (LA-ICP-MS) data to the differentiation of pre-ore and hydrothermal carbonates remains relatively untested. To assess the potential applicability of carbonate in situ REE+Y data, we combined transmitted light and cathodoluminescence (CL) petrography with LA-ICP-MS analysis of carbonate mineral phases from (1) the Proterozoic George Fisher clastic dominated (CD-type) massive sulfide deposit and from (2) correlative, barren host rock lithologies (Urquhart Shale Formation). The REE+YCN composition of pre-ore calcite suggests it formed during diagenesis from diagenetic pore fluids derived from ferruginous, anoxic seawater. Hydrothermal and hydrothermally altered calcite and dolomite from George Fisher is generally more LREE depleted than the pre-ore calcite, whole-rock REE concentrations, and shale reference values. We suggest this is the result of hydrothermal alteration by saline Cl--rich mineralizing fluids. Furthermore, the presence of both positive and negative Eu/Eu* values in calcite and dolomite indicates that the mineralizing fluids were relatively hot (>250°C) and cooled below 200–250°C during ore formation. This study confirms the hypothesis that in situ REE+Y data can be used to differentiate between pre-ore and hydrothermal carbonate and provide important constraints on the conditions of ore formation.

show abstract

The role of carbonate complexes and crystal habit on rare earth element uptake in low-temperature calcite in fractured crystalline rock

Cited by 14 publications

References 71 publications

Unraveling rare earth element signatures in hydrothermal carbonate minerals using a source–sink system

Unraveling rare earth element signatures in hydrothermal carbonate minerals using a source–sink system

Incorporation of Metals into Calcite in a Deep Anoxic Granite Aquifer

Differentiating between hydrothermal and diagenetic carbonate using rare earth element and yttrium (REE+Y) geochemistry: a case study from the Paleoproterozoic George Fisher massive sulfide Zn deposit, Mount Isa, Australia

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