“…Changes in redox conditions related to wetting/drying cycles also contribute to the formation of Fe-Mn concretions and/or coatings (e.g., Huot et al, 2014a;Sokolov et al, 2015) as well as the weathering of iron artefacts (e.g., nails: Howard et al, 2013Howard et al, , 2015. Carbonation, by reaction with atmospheric and microbial CO 2 , may occur during the early stages of weathering of alkaline materials (e.g., Grünewald et al, 2007). The weathering of glass in poorly crystalline aluminosilicates has been reported in soils formed in fly ash (e.g., Zevenbergen et al, 1999;Zikeli et al, 2002) and in iron industry by-products (e.g., Sauer and Burgardt, 2006;Huot et al, 2014a).…”