“I am an exploration geologist who has worked and collected minerals all over Mexico for over 35 years. During that time I have focused on the distribution of different ore deposit types, their primary mineralogy, how conditions of primary mineral formation overlap between deposit types, and the effects and processes of oxidation. I am also very interested in increasing exploration geologists appreciation for mineral recognition as the basis for "visual geochemistry" in their projects. I have published extensively on the distribution of ore deposits in Mexico and tend to think of minerals as inevitable products of their geologic environment and genesis...as such I am more impressed by geological regions of mineral occurrences than I am by what occurs within a political/geographical boundary. Always happy to help with proper locality information for Mexican specimens...and happier to learn of new species or occurrences from Mexico.”