Using Ti for the calculation, various geochemical process might add or subtract Ti in zircons, as inclusions, overgrowths, mantled e.t.c. Ti-rich mineral or fluids can be incorporated, thus does give any meaning on the crystallization history. What is the opinion of experts in this field.
Dear Mr. Bute:
Dr. Shumlyanskyy gave the only correct answer to your question . You cannot use any trace element contents for each and every host mineral.
Best regards
H.G.Dill
The Ti-in-zircon model of Watson was modelled for crystallized magmas saturated in Ti (i.e., rutile-bearing). Outside these conditions, the geothermometer is not valid.
Watsons's model won't give you any reliable information if you only have hydrothermal zircon. You can, however, use Ti-in-zircon thermometry coupled with zircon saturation temperature (e.g. Watson and Harrison 1983; Tole 1985; Ayers and Watson 1991; Boehnke et al 2013: using whole rock chemistry) to infer how much of your zircon is inherited or newly formed. Of course, this will depend if you are working on magmatic systems or not.
Best regards
Marta
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