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You
should multiply all of the crystalline phases by 5/7 with the remaining 2/7
being your amorphous phases.
Dear all
I'm doing quantitative analysis on a mixture
of 6 or 7 phases and I must to know the weight fraction of
amorphous phases.
I'm using Si as internal standard but I'didn't
understand if I must consider the relative or absolute difference between the
real and calculeted quantity.
For example: if I put in the mixture 5% of Si and
GSAS read 7% the relative error is 40%, Is this the quantity that I
must subtract from each phase and sum to obtain the amorphous, or the
process is different?
thanks in advance.
Ferdinando Costantino
dipartimento di Scienze della terra
Universit�
di Perugia.
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