supported by the Key science and Technology Projects of Inner Mongolia Autonomous Region(No.2019ZD001);the National Natural Science Foundation of China(Nos.42077015,41771267 and 41877030);the National Key Research and Development Program of China(No.2016YFD0800403);the Fundamental Research Funds for the Central Universities(No.103-510320036)。
Hausmannite is a common low valence Mn oxide mineral,with a distorted spinel structure,in surficial sediments.Although natural Mn oxides often contain various impurities of transitional metals(TMs),few studies have ad...