The geochemistry of Tl and its isotopes during magmatic and hydrothermal processes: The peralkaline Ilimaussaq complex, southwest Greenland

Hettmann, Kai; Marks, Michael A.W.; Kreissig, Katharina; Zack, Thomas; Wenzel, Thomas J.; Rehkämper, Mark; Jacob, Dorrit E.; Markl, Gregor

doi:10.1016/j.chemgeo.2013.12.004

Cited by 30 publications

(15 citation statements)

References 59 publications

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“…d Prytulak et al (2013). e Hettmann et al (2014). f Selected "best" values from GeoReM database (Jochum et al 2005 Table S1 in supporting information).…”

Section: Samples For Id Concentration Measurements Of Tl Pb and CDmentioning

confidence: 99%

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb

Palk

Andreasen

Rehkämper

et al. 2017

Meteorit & Planetary Scien

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Abstract-New Tl, Pb, and Cd concentration and Tl, Pb isotope data are presented for enstatite as well as L-and LL-type ordinary chondrites, with additional Cd stable isotope results for the former. All three chondrite suites have Tl and Cd contents that vary by more than 1-2 orders of magnitude but Pb concentrations are more uniform, as a result of terrestrial Pb contamination. Model calculations based on Pb isotope compositions indicate that for more than half of the samples, more than 50% of the measured Pb contents are due to addition of modern terrestrial Pb. In part, this is responsible for the relatively young and imprecise Pb-Pb ages determined for EH, L, and LL chondrites, which are hence only of limited chronological utility. In contrast, four particularly pristine EL chondrites define a precise Pb-Pb cooling age of 4559 AE 6 Ma.

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“…d Prytulak et al (2013). e Hettmann et al (2014). f Selected "best" values from GeoReM database (Jochum et al 2005 Table S1 in supporting information).…”

Section: Samples For Id Concentration Measurements Of Tl Pb and CDmentioning

confidence: 99%

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb

Palk

Andreasen

Rehkämper

et al. 2017

Meteorit & Planetary Scien

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“…2010a, Hettmann et al . ); and use as a tracer of contributions to the source regions of igneous materials (Nielsen et al . 2006b, , , , Prytulak et al .…”

Section: The Literature Mc‐icp‐ms Tl Isotope Ratio Data For Igneous Rmentioning

confidence: 99%

Thallium Mass Fraction and Stable Isotope Ratios of Sixteen Geological Reference Materials

Brett

Prytulak

Hammond

et al. 2018

Geostandard Geoanalytic Res

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Thallium stable isotope ratio and mass fraction measurements were performed on sixteen geological reference materials spanning three orders of magnitude in thallium mass fraction, including both whole rock and partially separated mineral powders. For stable isotope ratio measurements, a minimum of three independent digestions of each reference material was obtained. High‐precision trace element measurements (including Tl) were also performed for the majority of these RMs. The range of Tl mass fractions represented is 10 ng g−1 to 16 μg g−1, and Tl stable isotope ratios (reported for historical reasons as ε205Tl relative to NIST SRM 997) span the range −4 to +2. With the exception – attributed to between‐bottle heterogeneity – of G‐2, the majority of data are in good agreement with published or certified values, where available. The precision of mean of independent measurement results between independent dissolutions suggests that, for the majority of materials analysed, a minimum digested mass of 100 mg is recommended to mitigate the impact of small‐scale powder heterogeneity. Of the sixteen materials analysed, we therefore recommend for use as Tl reference materials the USGS materials BCR‐2, COQ‐1, GSP‐2 and STM‐1; CRPG materials AL‐I, AN‐G, FK‐N, ISH‐G, MDO‐G, Mica‐Fe, Mica‐Mg and UB‐N; NIST SRM 607 and OREAS14P.

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“…In general the Tl + ion is the dominant species over the Eh-pH space where water is stable (Vink, 1993) whilst Tl +3 can arise from Tl + oxidation by manganese oxides (Bidoglio et al, 1993), photoinduced oxidation (Li et al, 2005) or from bacterial activity (Lin and Nriagu, 1999). The geochemistry of Tl + is somewhat enigmatic with the Tl + cation displaying both lithophilic character, such as replacing K + in silicates, as well as chalcophilic behaviour with an affinity for sulphides (Kaplan and Mattigod, 1998;Hettmann et al, 2014). Because of these lithophile-chalcophile properties Tl has been likened to the mammal-bird like platypus (Weeks, 1968).…”

Section: Introductionmentioning

confidence: 97%

Demystifying the interfacial aquatic geochemistry of thallium(I): New and old data reveal just a regular cation

Coup

Swedlund

2015

Chemical Geology

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The geochemistry of Tl and its isotopes during magmatic and hydrothermal processes: The peralkaline Ilimaussaq complex, southwest Greenland

Cited by 30 publications

References 59 publications

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb

Thallium Mass Fraction and Stable Isotope Ratios of Sixteen Geological Reference Materials

Demystifying the interfacial aquatic geochemistry of thallium(I): New and old data reveal just a regular cation

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The geochemistry of Tl and its isotopes during magmatic and hydrothermal processes: The peralkaline Ilimaussaq complex, southwest Greenland

Cited by 30 publications

References 59 publications

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct 205Pb

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct 205Pb

Thallium Mass Fraction and Stable Isotope Ratios of Sixteen Geological Reference Materials

Demystifying the interfacial aquatic geochemistry of thallium(I): New and old data reveal just a regular cation

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Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb

Variable Tl, Pb, and Cd concentrations and isotope compositions of enstatite and ordinary chondrites—Evidence for volatile element mobilization and decay of extinct ²⁰⁵Pb