Physisorbed water originating from exposure to the ambient can have a strong impact on the structure and chemistry of oxide nanomaterials. The effect can be particularly pronounced when these oxides are in physical contact with a solid substrate such as the ones used for immobilization to perform electron or ion microscopy imaging. We used helium ion microscopy (HIM) and investigated morphologi...

This paper presents an interdisciplinary study of the Northern Chile Double Seismic Zone. First, a high resolution velocity structure of the subducting Nazca Plate has been obtained by a new double­difference tomography method. The double seismic zone (DSZ) is observed between 80 and 140 km depth and the two seismic planes are 20 km apart. Then, the chemical and petrologic characteristics of t...

Samples of young, outer surfaces of brucite-carbonate deposits from the ultramafic-hosted Lost City hydrothermal field were analyzed for DNA and lipid biomarker distributions and for carbon and hydrogen stable isotope compositions of the lipids. Methane-cycling archaeal communities, notably the Lost City Methanosarcinales (LCMS) phylotype, are specifically addressed. Lost City is unlike all oth...

Proton Exchange Membrane (PEM), which can currently work well on Microbial Fuel Cells (MFC), cannot be produced efficiently. This is due to its high cost and properties such as oxygen diffusion, presence of toxic sulphides, a potential translucent substrate. Alternatively, clay mixed with activated Carbon will used produce PEM. because the crystalline content has characteristics that are useful...

In this study we present the first Mg isotope data that record fate of during mineralisation atmospheric CO2 in ultramafic mine tailings. At Woodsreef Asbestos Mine, New South Wales, Australia, weathering waste sequesters significant amounts hydromagnesite [Mg5(CO3)4(OH)2·4H2O]. Mineralisation above-ground, sub-aerially stored tailings is driven by infiltration rainwater dissolving from bedrock...

Serpentinization is the process of hydroxylation olivine-rich ultramafic rocks to produce minerals such as serpentine, brucite and magnetite. This commonly accompanied by Fe oxidation release H2, which can be involved in abiotic reaction pathways leading genesis light hydrocarbons methane (CH4). Examples this phenomenon exist at seafloor, serpentinite-hosted Lost City hydrothermal field, on lan...

Magnesium hydroxide is a commodity chemical, produced in almost pure form from seawater through precipitation. Even though Li brines contain high concentrations of Mg2+ cations, the precipitation Mg(OH)2 them not common. Rather it typically coprecipitated with other salts and becomes waste. The crystallization chemical-grade Li+ rich brine that contained 3.1 g/L 1.3 Li+, was investigated by mea...