I love this paper–Jong-Mi did some very careful synchrotron analyses of the speciation of pMn in the near- and far-field hydrothermal plume of the EPR. We find that the mineralogy of Mn oxides may be an important parameter that controls the scavenging of many trace elements and isotopes.

We shelled out for open access: you can find the preprint here:

https://www.sciencedirect.com/science/article/pii/S0016703721001150