Analysis of radiogenic isotopes and selected non-traditional stable isotopes (e.g., B, Fe, Cd) are carried out on a Finnigan MAT 262 thermal ionization mass spectrometer (TIMS) with eight faraday collectors (seven movable, including high mass cup fixed at 208Pb-207Pb position) and a RPQ+ high abundance sensitivity device. For sample preparation, a clean chemistry laboratory is provided with positive pressure and filtration to a 95 percent level. The lab contains 16 lineal feet of hood space as well as ULPA filtered laminar flow stations, a HEPA-filtered microbalance room, and a Millipore ultrapure water filtration system for clean chemical procedures. Nearby sample preparation and acid cleaning laboratories contain fume hoods, muffle furnace, ovens, ultrasonic bath, centrifuges, and balances.

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