Newly determined ilmenite-melt and orthopyroxene-melt partition coefficients are used to construct quantitative forward models of the evolution of high field strength element (HFSE, Zr, Nb, Hf, Ta, Th, U) and rare earth element (REE: Nd, Sm, Lu) concentrations during crystallisation and subsequent remelting of the Lunar Magma Ocean (LMO). Crystallisation models suggest that the initial LMO must...

Abstract In terrestrial magmas titanium is predominantly tetravalent (Ti 4+ ), in contrast, lunar are more reduced (IW-1) and hence approximately 10% of their bulk Ti content trivalent 3+ ). Changes oxidation state coordination number both important parameters that can serve to drive stable isotope fractionation. As such, mineral–mineral mineral-melt fractionation factors determined for samples...

Titanium dioxide (TiO2) (nano)particles are produced in large quantities and their potential impacts on ecosystems warrants investigations into fate after disposal. TiO2 particles released wastewater retained by treatment plants accumulate digested sludge, which is increasingly incinerated industrialized countries. Therefore, we investigated the changes of Ti-speciation during incineration as-r...

Models for the evolution of the Moon must explain a number of important characteristics of its magmatic history. Primary among them is the emplacement of mare basalts primarily on one side of the Moon, and in a region of the surface roughly correlating with that containing high subsurface concentrations of KREEP. It is thus important to explore mechanisms which will regionally concentrate a KRE...

Abstract The textures and geochemical characteristics of the rocks in layered intrusions potentially provide insights into physicochemical processes that have taken place mafic magma chambers. Diverse exsolution Fe-Ti oxides may record variation subsolidus temperature oxygen fugacity (fO2) cooling Here we investigated ilmenitehematite solid solution (Ilmss) relationships evident preserved inter...

We report the ground state magnetic structure and in-field magnetostrictive effects of $\mathrm{Ni}\mathrm{Ti}{\mathrm{O}}_{3}$ studied by means zero-field single-crystal neutron diffraction, magnetization, high-resolution dilatometry experiments. Zero-field diffraction on single crystals confirms an easy-plane antiferromagnet with a multidomain state. Upon application external fields, shows ev...