From a quick skim through the table of contents, editorial and abstracts all papers appear to be a good read. Though from a purely personal perspective reflecting my own research interests in diagenetic processes, clay mineralogy, and industrial minerals, I find the following papers the most interesting - and I am looking forward to some good (I assume) reads over the weekend.
Wilkinson 2015 Does the nucleation of clay minerals control the rate of diagenesis in sandstones?Here is a link the full table of content.
Warr & Ferreiro Mählmann 2015 Recommendations for Kübler Index standardization
Garcia-Valles et al. 2015 Kaolin from Acoculco (Puebla, Mexico) as raw material: Mineralogical and thermal characterization