Chromium (Cr) is a toxic heavy metal that is heavily discharged into the soil environment
due to its widespread use and mining. High Cr levels may pose toxic hazards to plants …

In this article, we provide a critical review on the occurrence, formation, structure and stability
of schwertmannite–an enigmatic Fe (III) oxyhydroxy-sulfate mineral that is of widespread …

Hydrous manganese oxides are an important class of minerals that help regulate the
geochemical redox cycle in near-surface environments and are also considered to be …

Drinking water supplies in many geographic areas contain chromium in the+ 3 and+ 6
oxidation states. Public health concerns are centered on the presence of hexavalent Cr that …

The oxygenation of Earth's surface fundamentally altered global biogeochemical cycles and
ultimately paved the way for the rise of metazoans at the end of the Proterozoic. However …

Groundwater resources in California represent a confluence of high-risk factors for
hexavalent chromium contamination as a result of industrial activities, natural geology, and …

Chromium (VI) is an important heavy metal commonly found in tannery wastewater. In order
to manage this type of environmental pollution, there needs to be a better understanding of …

Uncovers the Key Role Microbes Play in the Transformation of Oxidizable and Reducible
MineralsMany areas of geomicrobial processes are receiving serious attention from …

Spectroscopic Methods in Mineralogy and Geology, Frank C. Hawthorne, ed. 1988),
contained a single chapter on X-ray absorption spectroscopy which reviewed aspects of …

Cr (VI) from oxidation of geogenic Cr (III) minerals is gradually becoming the primary source
of Cr (VI) in soils and groundwater instead of direct emissions. Thermodynamically, natural …