Ion microprobe UPb dating of apatite - ScienceDirect The ion microprobe U, pb method has been also extended to several minerals such as monazite (DeWolf., 1993; Williams., 1996 perovskite (Ireland., 1990 sphene (Kinny., 1994) and apatite (Kennedy and Dante, 1997). Since the amount of sample consumed by the ion microprobe analysis is very small (nanogram) with. The sensitive high-resolution ion microprobe (also sensitive high mass-resolution ion microprobe or shrimp) is a large-diameter, double-focusing secondary ion mass spectrometer. Pb zircon analysis, a single secondary electron multiplier is used for ion counting. Sensitive high-resolution ion microprobe - Wikipedia Canadian Centre for Isotopic Microanalysis (ccim) The ion microprobe facility provides Canadian and international geoscientists in academia, government, and industry, access to Canada s only multicollector, high resolution instrument, the Cameca IMS1280. Mg, Si, S, Cl U -Th. Pb isotopes, and trace elements (e.g., Ti, REE s) directly from minerals. Both inorganic and biologically.