TL;DR: A survey of the literature suggests that the major factors influencing forsteritic olivine dissolution rates are 1) pH, 2) water activity, 3) temperature, and 4) mineral-fluid interfacial surface area as discussed by the authors.

TL;DR: In this article, the authors report data for 40 ultramafic rocks comprising pristine upper mantle peridotites from the Balmuccia orogenic lherzolite massif and Archean komatiites that together define the Zn isotope composition of the Earth's primitive mantle.

TL;DR: In this paper, the effect of recoilless fraction on the apparent Fe3+/ΣFe ratio measured from room temperature Mossbauer spectra was taken into account.

TL;DR: In this paper, soil columns taken from a young pine forest (PF) and an old evergreen broadleaved forest (BF) were applied three levels of acid addition treatments for 60 days, and significant differences in soil organic matter content were found to be responsible for these different responses, as a result of significantly positive correlation between cation exchange capacity and organic carbon in both forest soils.

TL;DR: In this article, the trace element and U-Pb systematics of metamorphic apatite were investigated from a suite of 22 bedrock samples of diverse metamorphics grade and protolith type.

TL;DR: In this article, the distribution of trace ore elements in different paragenetic stages of pyrite has been documented for the first time in the sub-seafloor of the TAG massive sulfide deposit.

TL;DR: In this paper, the carbonic anhydrase (CA), a common enzyme of bacteria, promoted carbon dioxide hydration to release HCO3− and CO32− in the process of calcite precipitation; the pH increased from 7.2 to 8.9 as a result of the combination effect of the released ammonia by B. cereus MRR2 and the HCO 3− and carbon 32− ions originating from the CA reaction.

TL;DR: In this article, a method for high-precision stable potassium (K) isotope analysis using High-Resolution MultiCollector Inductively Coupled Plasma Mass Spectrometry (HR-MC-ICPMS) is presented.

TL;DR: In this article, in situ attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) was applied to explore the interaction mechanisms of Cd(II) with sulfate or phosphate at the ferrihydrite (Fh)-water interface, and the two-dimensional correlation spectroscopic analysis (2D-COS) was used to enhance the resolution of ATRFTIR bands and the accuracy of analysis.

TL;DR: In this article, the scheelite was classified into three types: prograde, retrograde, and semi-retrograde skarns, and the lattice strain model was used to estimate the relative distribution of rare earth element (REE) in scheelites and to predict the relative distributions of REE in the ore-forming fluids.

TL;DR: In this article, snapshots of the melts preserved in sheared peridotite xenoliths from the Udachnaya-East kimberlite pipe, in the central part of the Siberian craton, were reported.

TL;DR: In this article, the authors proposed a new approach for in situ LA-ICPMS dating of cassiterite, which benefits from the unique chemistry of cassitite with extremely low Th concentrations (Th/U ratio of 10−4 or lower) in some cassite samples.

TL;DR: In this paper, the A-type and I-type granites and mafic dyke rocks from the Jiuhuashan region (South China) have been geochemically studied with a special emphasis on their halogen (F, Cl, Br, I) contents to better understand the role of halogens during their genesis.

TL;DR: In this paper, a 4-step acquisition scheme was proposed to measure all isotope ratios dynamically by thermal ionization mass spectrometry (TIMS); the aim being to minimize the dependency of all mass fractionation-corrected ratios on collector efficiencies and amplifier gains.

TL;DR: In this article, a multi-proxy paleoredox investigation of previously unanalyzed strata of the late Paleoproterozoic Animikie Basin using drill cores through the ~1.85 Ga Stambaugh Formation (Paint River Group) in the Iron River-Crystal Falls district of the Upper Peninsula of Michigan, USA is presented.

TL;DR: In this paper, a geochemical study of the Peninsular river's sediments has been conducted and it has been found that the initial chemical weathering of rocks in the catchment produces texturally, mineralogically and geochemically diverse sediments and fluvial processes further segregate them into the geochemicalically contrasting coarse channel and fine-grained suspended sediments.

TL;DR: In this paper, four actinobacterial strains, including two isolates from REE-rich rocks and two from surrounding red soil, were found to have the capability of bio-leaching rare earth elements (REEs) from a bastnaesite-bearing rock.

TL;DR: In this article, the impact of heterogeneity on the dissolution of two limestones, characterised by distinct degrees of flow heterogeneity at both the pore and core scales, was experimentally investigated.

TL;DR: In this paper, textural, mineralogical and geochemical signatures of sediments from the upper Yellow River have been examined to study the influence of provenance, weathering intensity, and hydraulic sorting on the spatial compositional variability of the sediments.

TL;DR: In this article, a generic approach to determine properties of H2O-NaCl-CO2 inclusions, based on petrographic, microthermometic and/or Raman spectroscopic data, invoking mass balance and conservation of bulk molar volume constraints, is presented.

TL;DR: In this article, a database of published spring water hydrogeochemistry was built and analyzed to better understand the control of land temperature on carbonate weathering, and the average soil-rock CO2 was calculated by an inverse model framework and a strong relationship with temperature was observed.

TL;DR: The secondary minerals present in the different treatments further illustrated the co-occurrence of biological, chemical, and coupling processes in the microbially mediated nitrate-reducing Fe(II) oxidation system.

TL;DR: In this article, the remineralization of sedimentary organic carbon (SOC) at 12 sites in East China Sea mobile-muds (ECSMMs) and South Yellow Sea central mud deposits (SYSMDs) was investigated using a time-sequence sediment incubation experiment.

TL;DR: In this paper, the authors present a Bayesian procedure that is well suited to the inversion of U-Pb date profile datasets and balances computational efficiency with a full search of thermal history coordinate space.

TL;DR: In this article, a method for the determination of Zr stable isotope ratios within natural geological materials using ion exchange, double-spike, multiple-collector inductively coupled mass spectrometry (MC-ICPMS) was presented.

TL;DR: In this paper, the authors studied the variability of the Mo isotope signatures in calc-alkaline lavas sampled along the Banda Arc in Indonesia, an intra-oceanic subduction zone well known for variable contributions of subducting continental meterial.

TL;DR: In this article, the authors presented a complete dataset for major, minor and trace elements in wolframite ([Fe,Mn]WO4) based on the example of several peribatholitic hydrothermal W deposits located in the Variscan French Massif Central (FMC).

TL;DR: In this paper, the authors present a consistent dataset of surface complexation model parameters valid at 25°C and 1'bar that characterize the adsorption of selected divalent metals (Cd, Cu, Pb, Zn) onto environmentally relevant Fe(III) (oxyhydr)oxides, i.e., FeOOH and Fe2O3 polymorphs (goethite, hematite, lepidocrocite, maghemite), at varying metal concentrations and ionic strengths.

TL;DR: In this paper, the authors evaluated grain size-dependence and variability of Nd and strontium compositions in the Indus delta of Pakistan, documenting both a significant isotopic evolution and coarsening upward sequence during the last deglaciation (~15 ka).