Expert in magmatic-hydrothermal systems that form world-class skarn deposits. Has studied most major skarn deposits of the world, worked with exploration/mining companies on both brownfield and greenfield properties, and published extensively on skarn deposits including the most-cited review paper. Available for skarn workshops, drill core and mine review, as well as field visits tailored to project needs. Pioneer in applying earth resource expertise to assessment of asteroid, lunar, and Martian space resources. Expert in terroir studies of vineyards and wineries, winemaker for 37 years specializing in barrel-fermented Bordeaux-style blend of Cabernet Sauvignon-Carmenere-Malbec.