Abstract The dissolution of amorphous and crystalline oligoclase, a Na-feldspar with traces Ca K, was investigated at 90 °C acidic pH 1.5 3 to unravel the impact long- short-range orders on silicate mechanisms. Experiments were conducted in solutions spiked 29 SiO 2 (aq) saturated respect (am). Through morphology, structural, composition characterizations, we showed that samples (glass samples)...

Nitrous oxide is a potent atmospheric greenhouse gas1 that contributes to ozone destruction2. Biological processes such as nitrification and denitrification are thought to drive nitrous oxide production in soils, which comprise the largest source of nitrous oxide to the atmosphere1. Here we present measurements of the concentration and isotopic composition of nitrous oxide in soil pore spaces i...

Many 4øAr/39Ar age spectra for alkali feldspars are significantly different from the model age spectra calculated for slowly cooled samples composed of diffusion domains of a single size, and the Arrhenius plots for these samples show departures from linearity that are inconsistent with diffusion from domains of equal size. The most plausible explanation for these discrepancies is the existence...

Introduction: The cooperation between Dieter Stöffler and Ernst-Mach-Institut (EMI) [1-14] goes back to 1972 when first experiments were performed to shock single crystal feldspars by steel plates that were accelerated with an explosive plane wave generator [1,7]. The shock experiments initiated a series of studies that required versatile and reliable test methods for the generation of Hugoniot...

Abstract. Potassium feldspars (K-feldspars), such as microcline, are considered key dust minerals inciting ice nucleation in mixed-phase clouds. Besides the high activity of recent studies also revealed a sensitivity microcline to interaction with solutes on its surface. Here, we investigate effect organic and bio-organic substances aim better understand underlying surface interactions. We perf...