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Dear Fernando,

You could matrix correct the trace analyses (Cu, Ni, Co, V, Cr) by 
simply reprocessing the data using the Off-Line Correction Program.  Go 
to Process >> Quantitative Analyses >> Off-Line Correction.  Select the 
sample containing the trace element data, then add the major element 
data as fixed values (Element Conditions >> CAL).  After that all you 
need to do is reprocess the data.

If you have any problems, let me know.

Regards,

Peter

Peter McSwiggen
McSwiggen & Associates, P.A.
2855 Anthony Lane South, Suite B1
St. Anthony, MN  55418
phone: 	612.781.2282
fax:		612.781.7540
e-mail:	[log in to unmask]
web:          www.McSwiggen.com

On Mar 10, 2008, at 9:10 AM, Fernando Colombo wrote:

> JEOL Probe Users Listserver
>
> Moderator: Ellery Frahm, [log in to unmask],
> Electron Microprobe Lab, University of Minnesota
>
> Post a message: send your message to [log in to unmask]
>
> Unsubscribe: send "SIGNOFF PROBEUSERS" to [log in to unmask]
>
> On-line help and FAQ: http://probelab.geo.umn.edu/listserver.html
>
>
>
> *
>
> I have two different sets of analyses of genthelvite,
> Zn4 Be3 [S/(SiO4)3], one for major elements (including
> Si, Ti, Al, Fe, Mg, Mn, Zn, Ca, K, P, S, Cl and F) and
> another for some trace elements (Cu, Ni, Co, V and
> Cr). The operating conditions were different for each
> set. The microprobe used for data acquisition was a
> JEOL 8900.
> At the moment when we run the second analyses, matrix
> compositions were not  entered so that trace element
> concentrations are not matrix-corrected.
> I would appreciate it if somebody could tell me if
> there is a way to integrate the two data sets so that
> both have the proper matrix correction.
> Thank you very much,
>
> Fernando Colombo
>
>
>
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