A complete set of new thermodynamic data has been determined for three Al and Fe arsenate minerals: mansfieldite, angelellite and kamarizaite.
Majzlan J., Nielsen U.G., Dachs E., Benisek A., Drahota P., Kolitsch U., Herrmann J., Bolanz R., Števko M. (2018): Thermodynamic properties of mansfieldite (AlAsO4·2H2O), angelellite (Fe2(AsO4)2O3) and kamarizaite (Fe3(AsO4)2(OH)3·3H2O). Mineralogical Magazine 82, 1333-1354. (DOI)
In 2018, Zdeněk Johan Award was awarded to Petr Drahota for his paper: Drahota et al. (2017) Biologically induced formation of realgar deposits in soil, Geochimica et Cosmochimica Acta 218, 237–256. Congratulations!
The findings of this study indicated that the historical mining village of Kaňk is highly contaminated by As, Cu, Pb, and Zn, of which As is the most significant contaminant. Despite the high concencentration of As in mining wastes (∼1.15 wt.%), urban soils (∼0.3 wt.%), and road dusts (∼ 440 mg/kg), risk was associated only with mining waste and contaminated soil material via oral exposure (not the inhalation pathway)
Drahota P., Raus K., Rychlíková E., Rohovec J. (2018): Bioaccessibility of As, Cu, Pb, and Zn in mine waste, urban soil, and road dust in the historical mining village of Kaňk, Czech Republic. Environmental Geochemistry and Health 40, 1495-1512. (DOI)
