Carbonation is the water-mediated replacement of silicate minerals, such as olivine, by carbonate, and is commonplace in the Earth's crust. This reaction can remove significant quantities of CO2 from the atmosphere and store it over geological timescales. Here we present the first direct evidence for CO2 sequestration and storage on Mars by mineral carbonation. Electron beam imaging and analysi...

Based on seismic reflections and detrital composition analysis as well as cluster analysis, a multi-provenance depositional model of the Upper Fourth Member of the Shahejie Formation was proposed considering the paleo-gully sedimentation controlled by well Y920 in the east of the northern abrupt slope belt in Dongying depression. The result shows that the paleogeomorphology of the Y920 gully de...

The mechanism of anionic/cationic combination collector ST-8 for the efficient separation spodumene and feldspar was investigated by flotation tests, surface tension measurements, zeta potential measurements infrared spectroscopy analysis. results indicated that when optimum molar ratio sodium oleate dodecylamine 6:1–10:1 pH = 8.5, recovery reached a maximum 80% about 24.5%. Zeta showed negativ...

Abstract. Feldspar is an important constituent of airborne mineral dust. Some alkali feldspars exhibit particularly high ice nucleation (IN) activity. This has been related to structural similarities the (101?0) prism planes and (100) feldspar. Here effect generating feldspar surfaces with close orientation by means chemically induced fracturing on IN activity was investigated experimentally. T...

Estimation of the temperature dependence of natural feldspar weathering in two catchments at different elevations yields an apparent Arrhenius activation energy of 18.4 kcal/mol (77.0 kj/mol), much higher than most laboratory values. This finding supports recent suggestions that hydrolytic weathering of silicate minerals may consume carbonic acid and thereby remove atmospheric carbon dioxide mo...