Eunyoung and all,
Berman's programs could be used to calculate reactions with pargasite,
hornblende, edenite, tschermakite, diopside, anorthite, quartz and water.
Several dehydration reactions should fall out for various Ti-free
amphiboles with cpx-pg-qz. Simple reactions such as Pg + Qz = Hb + Ab, Ed
+ Qz = Tr + Ab can also be balanced -- they form the basis of the hb-pg
thermometer. If one considers a hypothetical kaersutite end-member, other
reactions can be balanced with ilmenite as well, but one may need to
consider two amphibole species. Rob's TWEEQ program could be used to
provide some estimate of P-T assuming an H2O activity.
Eric
Dear all:
>
> Could anyone refer me papers that deal with reaction including
>ilmenite and
>plagioclase? Primary mineral assemblages suppose to be clinopyroxene +
>ilmenite
>+ plagioclase +/- quartz with some minor constituents in alkalic amphibolite.
>Pargasitic horblende appears between ilmenite and plagioclase, also between
>clinopyroxene and plagioclase. The hornblendes suppose to be results of
>hydration reaction, but how the former case occurs. The hornblende around
>ilmenite does not seem to be primarily clinopyroxene.
> Please inform me what possibility should be considered.
>
>Thank you.
>
>
>
>
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