VizualAge_UComPbine question about settings

lstockli

Hello,

I'm not entirely clear on what exactly some of the settings in the VizualAge UComPbine DRS mean and it would be great if you could shed light on this. For common Pb composition, there is the option to choose Reference Material (which I assume takes the Pbc from the Iolite ref material file) or Stacey-Kramers (does that calculate the Pbc composition based on the age of the ref material?).

The next choice is the 207Pb/206Pb reference. This is clearcut if you have measured NIST or something to use, but what do the options "Factor" and "Same" do? And if you choose "Factor", the you have to choose a value with the default being 1.0. These terms ring a bell from the old Iolite3 Common Approach DRS, but I can no longer access that webinar.

thank you,
Lisa
(University of Texas at Austin)

PCarr

Hi Lisa,

For the Common Pb composition: yes; Iolite will calculate the assumed 7/6i based on the age of your reference material and the S-K Model.

For 207/206 reference: Factor just means multiply the measured values by the defined factor, e.g., if you put 0.9 in the field then corrected 7/6 values will be 90% of the measured values. I'm pretty sure that 'Same' means no correction. i.e. Measured values = final values.

Hope this helps
Patrick