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Last December, in the winter-dark woods of Twickenham’s Orlean House Gallery in London, visitors to an installation began exploring the forest at dusk. Headphones on, wrapped in their own world, they walked whilst absorbing an 18-minute unfolding audio, a dream happening within one of the UK’S butterfly and moth datasets. And as they explored, they encountered sculptures. Pulsing glows, distant amongst trees at first, and then closer.
Article Feng Yin, Corresponding Author yinfeng@hnust.cn orcid.org/0000-0002-0277-4005 Department of Geology, Hunan University of Science and Technology, Xiangtan, 411201 China Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640 China Corresponding author. E-mail: yinfeng@hnust.cn Search for more papers by this author Thomas G.
Abstract Bridgmanite, MgSiO3 with perovskite structure, is considered the most abundant mineral on Earth. On the lower mantle, it contains Fe and Al that strongly influence its behavior. Experimentalists have debated whether iron may exist in a mixed valence state, coexistence of Fe2+ and Fe3+ in bridgmanite, through charge disproportionation. Here, we report the discovery of Fe-rich aluminous bridgmanite coexisting with metallic iron in a shock vein of the Suizhou meteorite.
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