Sumit,
One can extract the a/X relations for Jd-Ac from the very
careful experiments of Liu & Bohlen (1995) on both diluted and end-
member Jd-Qz-Ab. Holland (1983, 1990) fit Di-Jd data to W models
based primarily on his experiments. Anovitz (1991) did a quaternary
model for CaTs, Hd, Jd and Di, and gave estimates for all the
binaries. There are several models for Di-Hd of course.
eric
On Nov 17, 2005, at 5:16 PM, Sumit Chakraborty wrote:
> Eric Essene wrote:
>
>> Sumit,
>> Very few metamorphic systems are closed however. Fluids come
>> and go.
>> I agree with most of your extensive comments.
>> We have some mixing data on cpx binaries, including Jd-Ac and
>> Di-Jd.
>> eric
>>
>>
> Eric,
>
> Thanks - yes, of course, metamorphic systems are never closed (as I
> noted - only in a computer do such systems exist) - but considering
> Duhem's theorem in a closed system provides a point of departure
> and helps to focus on the fact that variation of fO2 in a constant
> P-T system is merely another name for an open system, discussions
> of "variation of fO2 in a closed system" are all too often redundant.
>
> But my main point of writing again - I am interested in those
> mixing properties - can you point me to the ref / observations?
>
> Sumit
>
>
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