Comments on “Trace-element characteristics of different pyrite types in Mesoarchaean to Palaeoproterozoic placer deposits” by Koglin et al. (Mineralium Deposita 42: 259–280, 2010)

This paper represents a well-written introduction to the subject, and the interpretation of the data offers some interesting approaches to the problems of unravelling the origin of these types of pyrite. It could have led to new insights into some of the enigmatic aspects of auriferous placers were it not for flaws in the data, inadequate description of analytical methods, and misleading presentation of the data.