Department of Geology 
3081 Natural History Bldg. 
1301 W Green St. 
Urbana, IL 61801 

Phone: (217) 333-3540 
Email:  tmjohnsn@illinois.edu  

The isotope geochemistry laboratory houses a Nu Plasma HR multicollector inductively-coupled-plasma mass-spectrometer (MC-ICPMS) supporting the groups of Professors Craig Lundstrom and Thomas Johnson.  The instrument is designed to measure isotope ratios to high precision.  Our interests cover a wide range of studies from geochronology to tracing geochemical sources to monitoring reduction and diffusion.  Isotope systems routinely analyzed include Mg, Si, Fe, Cr, Se, Sr, Hg, Pb and U.   

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