A total of 74 analyses on nine garnet sand grains were made with an ARL SEMQ electron microprobe, automated with Advanced Micro Beam, Inc.'s PC-based, Micro-3WD system, at the University of Maine (Tables T1, T2). The accelerating potential was 15 kV, and the beam current was 10 nA with simple silicate and oxide standards and fracture zone corrections. Oxides analyzed were SiO2, TiO2, Al2O3, FeO, MnO, MgO, CaO, K2O, and Na2O.